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Reel/Frame:	040996/0899			Pages:	12
		Recorded:	12/16/2016
Attorney Dkt #:	F167254
Conveyance:	RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).

Total properties: 61

Patent #:	5711382	Issue Dt:	01/27/1998	Application #:	08506955	Filing Dt:	07/26/1995
Title:	AUTOMATED OIL RIG SERVICING SYSTEM

Patent #:	5988299	Issue Dt:	11/23/1999	Application #:	08623041	Filing Dt:	03/28/1996
Title:	AUTOMATED OIL RIG SERVICING SYSTEM

Patent #:	6079490	Issue Dt:	06/27/2000	Application #:	09058477	Filing Dt:	04/10/1998
Title:	REMOTELY ACCESSIBLE MOBILE REPAIR UNIT FOR WELLS

Patent #:	6168054	Issue Dt:	01/02/2001	Application #:	09200490	Filing Dt:	11/25/1998
Title:	OIL RECOVERY SYSTEM AND APPARATUS

Patent #:	6377189	Issue Dt:	04/23/2002	Application #:	09281864	Filing Dt:	03/31/1999
Title:	OIL WELL SERVICING SYSTEM

Patent #:	6212763	Issue Dt:	04/10/2001	Application #:	09342564	Filing Dt:	06/29/1999
Title:	TORQUE-TURN SYSTEM FOR A THREE-ELEMENT SUCKER ROD JOINT

Patent #:	6276449	Issue Dt:	08/21/2001	Application #:	09533511	Filing Dt:	03/23/2000
Title:	Engine speed control for hoist and tongs

Patent #:	6253849	Issue Dt:	07/03/2001	Application #:	09534599	Filing Dt:	03/27/2000
Title:	Method of distinguishing the raising and lowering of tubing and sucker rods

Patent #:	6209639	Issue Dt:	04/03/2001	Application #:	09534601	Filing Dt:	03/27/2000
Title:	METHOD OF ENSURING THAT WELL TUBING WAS PROPERLY STRETCHED

Patent #:	6213207	Issue Dt:	04/10/2001	Application #:	09535239	Filing Dt:	03/27/2000
Title:	Method of distinguishing between installing different sucker rods

Patent #:	6241020	Issue Dt:	06/05/2001	Application #:	09535555	Filing Dt:	03/27/2000
Title:	METHOD OF RECORDING A CROSS-LOAD ON A MOBILE REPAIR UNIT FOR A WELL

Patent #:	6164493	Issue Dt:	12/26/2000	Application #:	09566166	Filing Dt:	05/05/2000
Title:	Oil recovery method

Patent #:	6533519	Issue Dt:	03/18/2003	Application #:	09620580	Filing Dt:	07/20/2000
Title:	PIPE HANDLING APPARATUS

Patent #:	6374706	Issue Dt:	04/23/2002	Application #:	09768551	Filing Dt:	01/25/2001
Title:	SUCKER ROD TOOL

Patent #:	6728638	Issue Dt:	04/27/2004	Application #:	09838857	Filing Dt:	04/23/2001
Publication #:	US20020156582	Pub Dt:	10/24/2002
Title:	METHOD OF MONITORING OPERATIONS OF MULTIPLE SERVICE VEHICLES AT A WELL SITE

Patent #:	6826492	Issue Dt:	11/30/2004	Application #:	09839444	Filing Dt:	04/23/2001
Publication #:	US20020156591	Pub Dt:	10/24/2002
Title:	METHOD OF MANAGING A WELL FILE RECORD AT A WELL SITE

Patent #:	6578634	Issue Dt:	06/17/2003	Application #:	09945924	Filing Dt:	09/05/2001
Publication #:	US20030042020	Pub Dt:	03/06/2003
Title:	METHOD OF MONITORING PUMPING OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE

Patent #:	6758095	Issue Dt:	07/06/2004	Application #:	10046688	Filing Dt:	01/16/2002
Publication #:	US20030188584	Pub Dt:	10/09/2003
Title:	TONGS MONITOR WITH LEARNING MODE

Patent #:	7006009	Issue Dt:	02/28/2006	Application #:	10113609	Filing Dt:	04/01/2002
Publication #:	US20030183382	Pub Dt:	10/02/2003
Title:	SERVICING SYSTEM FOR WELLS

Patent #:	7004456	Issue Dt:	02/28/2006	Application #:	10263630	Filing Dt:	10/03/2002
Publication #:	US20040065874	Pub Dt:	04/08/2004
Title:	ENGINE SPEED LIMITER FOR A HOIST

Patent #:	6898983	Issue Dt:	05/31/2005	Application #:	10292715	Filing Dt:	11/12/2002
Publication #:	US20040089076	Pub Dt:	05/13/2004
Title:	MECHANICAL MULTIPLIER FOR A STRAIN GAGE ON A DERRICK

Patent #:	6719515	Issue Dt:	04/13/2004	Application #:	10389026	Filing Dt:	03/14/2003
Publication #:	US20030147726	Pub Dt:	08/07/2003
Title:	PIPE HANDLING APPARATUS

Patent #:	7064677	Issue Dt:	06/20/2006	Application #:	10440633	Filing Dt:	05/19/2003
Publication #:	US20030196798	Pub Dt:	10/23/2003
Title:	METHOD OF MONITORING SERVICE OPERATIONS OF A SERVICE VEHICLE AT A WELL SITE

Patent #:	7221155	Issue Dt:	05/22/2007	Application #:	10760650	Filing Dt:	01/20/2004
Publication #:	US20040196032	Pub Dt:	10/07/2004
Title:	INVENTORY COUNTER FOR OIL AND GAS WELLS

Patent #:	7029422	Issue Dt:	04/18/2006	Application #:	10778835	Filing Dt:	02/13/2004
Publication #:	US20040192507	Pub Dt:	09/30/2004
Title:	ERGONOMICS SAFETY WARNING DEVICE AND METHOD TO PREVENT CLUTCH BURNING

Patent #:	7228899	Issue Dt:	06/12/2007	Application #:	10778846	Filing Dt:	02/13/2004
Publication #:	US20040188088	Pub Dt:	09/30/2004
Title:	WARNING DEVICE AND METHOD TO PREVENT CLUTCH BURNING

Patent #:	6969223	Issue Dt:	11/29/2005	Application #:	10818575	Filing Dt:	04/06/2004
Publication #:	US20040197166	Pub Dt:	10/07/2004
Title:	PIPE HANDLING APPARATUS

Patent #:	7066266	Issue Dt:	06/27/2006	Application #:	10826783	Filing Dt:	04/16/2004
Publication #:	US20050230117	Pub Dt:	10/20/2005
Title:	METHOD OF TREATING OIL AND GAS WELLS

Patent #:	7226037	Issue Dt:	06/05/2007	Application #:	10925813	Filing Dt:	08/25/2004
Publication #:	US20060163545	Pub Dt:	07/27/2006
Title:	SYSTEM FOR ASSURING ENGAGEMENT OF A HYDROMATIC BRAKE ON A DRILLING OR WELL SERVICE RIG

Patent #:	7461830	Issue Dt:	12/09/2008	Application #:	10942730	Filing Dt:	09/16/2004
Publication #:	US20050114001	Pub Dt:	05/26/2005
Title:	MULTIPLE SENSOR FOR PREVENTING A CROWN-BLOCK INCURSION ON AN OIL WELL RIG

Patent #:	7006920	Issue Dt:	02/28/2006	Application #:	10957309	Filing Dt:	10/01/2004
Publication #:	US20050103491	Pub Dt:	05/19/2005
Title:	ACTIVITY DATA CAPTURE SYSTEM FOR A WELL SERVICE VEHICLE

Patent #:	7114577	Issue Dt:	10/03/2006	Application #:	11066576	Filing Dt:	02/25/2005
Publication #:	US20050199388	Pub Dt:	09/15/2005
Title:	SAFEMODE OPERATING SYSTEM FOR A DRILLING OR SERVICE RIG

Patent #:	7273104	Issue Dt:	09/25/2007	Application #:	11161185	Filing Dt:	07/26/2005
Publication #:	US20060021753	Pub Dt:	02/02/2006
Title:	METHOD OF PUMPING AN "IN-THE-FORMATION" DIVERTING AGENT IN A LATERAL SECTION OF AN OIL AND GAS WELL

Patent #:	7359801	Issue Dt:	04/15/2008	Application #:	11516105	Filing Dt:	09/05/2006
Publication #:	US20070056746	Pub Dt:	03/15/2007
Title:	METHOD AND SYSTEM FOR EVALUATING WEIGHT DATA FROM A SERVICE RIG

Patent #:	7519508	Issue Dt:	04/14/2009	Application #:	11516153	Filing Dt:	09/05/2006
Publication #:	US20070067107	Pub Dt:	03/22/2007
Title:	METHOD AND SYSTEM FOR SETTING AND ANALYZING TUBING TARGET PRESSURES FOR TONGS

Patent #:	7519475	Issue Dt:	04/14/2009	Application #:	11517919	Filing Dt:	09/08/2006
Publication #:	US20070089878	Pub Dt:	04/26/2007
Title:	METHOD FOR DETERMINING BLOCK PROPERTIES OF A SERVICE RIG BY EVALUATING RIG DATA

Patent #:	7513338	Issue Dt:	04/07/2009	Application #:	11517920	Filing Dt:	09/08/2006
Publication #:	US20070056811	Pub Dt:	03/15/2007
Title:	BRAKE SYSTEM FOR A WELL SERVICE OR DRILLING HOIST

Patent #:	7588083	Issue Dt:	09/15/2009	Application #:	11690483	Filing Dt:	03/23/2007
Publication #:	US20080035333	Pub Dt:	02/14/2008
Title:	METHOD AND SYSTEM FOR SCANNING TUBING

Patent #:	7571054	Issue Dt:	08/04/2009	Application #:	11690904	Filing Dt:	03/26/2007
Publication #:	US20080035334	Pub Dt:	02/14/2008
Title:	METHOD AND SYSTEM FOR INTERPRETING TUBING DATA

Patent #:	7672785	Issue Dt:	03/02/2010	Application #:	11691031	Filing Dt:	03/26/2007
Publication #:	US20080035335	Pub Dt:	02/14/2008
Title:	METHOD AND SYSTEM FOR EVALUATING AND DISPLAYING DEPTH DATA

Patent #:	7788054	Issue Dt:	08/31/2010	Application #:	11691163	Filing Dt:	03/26/2007
Publication #:	US20070227225	Pub Dt:	10/04/2007
Title:	METHOD AND SYSTEM FOR CALIBRATING A TUBE SCANNER

Patent #:	7518526	Issue Dt:	04/14/2009	Application #:	11691219	Filing Dt:	03/26/2007
Publication #:	US20080037368	Pub Dt:	02/14/2008
Title:	METHOD AND SYSTEM FOR DISPLAYING SCANNING DATA FOR OIL WELL TUBING BASED ON SCANNING SPEED

Patent #:	7657376	Issue Dt:	02/02/2010	Application #:	11827052	Filing Dt:	07/10/2007
Publication #:	US20070288169	Pub Dt:	12/13/2007
Title:	METHOD AND SYSTEM FOR EVALUATING WEIGHT DATA FROM A SERVICE RIG

Patent #:	7793918	Issue Dt:	09/14/2010	Application #:	11850391	Filing Dt:	09/05/2007
Publication #:	US20090057630	Pub Dt:	03/05/2009
Title:	METHOD AND SYSTEM FOR GOVERNING BLOCK SPEED

Patent #:	7917293	Issue Dt:	03/29/2011	Application #:	11850398	Filing Dt:	09/05/2007
Publication #:	US20090063054	Pub Dt:	03/05/2009
Title:	METHOD AND SYSTEM FOR CONTROLLING A WELL SERVICE RIG BASED ON LOAD DATA

Patent #:	7631563	Issue Dt:	12/15/2009	Application #:	11850405	Filing Dt:	09/05/2007
Publication #:	US20090056467	Pub Dt:	03/05/2009
Title:	METHOD AND SYSTEM FOR EVALUATING ROD BREAKOUT BASED ON TONG PRESSURE DATA

Patent #:	8684096	Issue Dt:	04/01/2014	Application #:	12592026	Filing Dt:	11/19/2009
Publication #:	US20100252278	Pub Dt:	10/07/2010
Title:	Anchor assembly and method of installing anchors

Patent #:	8590401	Issue Dt:	11/26/2013	Application #:	12627529	Filing Dt:	11/30/2009
Publication #:	US20100132180	Pub Dt:	06/03/2010
Title:	METHOD AND SYSTEM FOR CONTROLLING TONGS MAKE-UP SPEED AND EVALUATING AND CONTROLLING TORQUE AT THE TONGS

Patent #:	8280639	Issue Dt:	10/02/2012	Application #:	12627542	Filing Dt:	11/30/2009
Publication #:	US20100138159	Pub Dt:	06/03/2010
Title:	METHOD AND SYSTEM FOR MONITORING THE EFFICIENCY AND HEALTH OF A HYDRAULICALLY DRIVEN SYSTEM

Patent #:	8453729	Issue Dt:	06/04/2013	Application #:	12658226	Filing Dt:	02/04/2010
Publication #:	US20100252252	Pub Dt:	10/07/2010
Title:	HYDRAULIC SETTING ASSEMBLY

Patent #:	8280636	Issue Dt:	10/02/2012	Application #:	13051590	Filing Dt:	03/18/2011
Publication #:	US20110214856	Pub Dt:	09/08/2011
Title:	METHOD AND SYSTEM FOR CONTROLLING A WELL SERVICE RIG BASED ON LOAD DATA

Patent #:	8589036	Issue Dt:	11/19/2013	Application #:	13161736	Filing Dt:	06/16/2011
Publication #:	US20110313626	Pub Dt:	12/22/2011
Title:	METHOD AND SYSTEM FOR AUTOMATICALLY SETTING, ADJUSTING, AND MONITORING LOAD-BASED LIMITS ON A WELL SERVICE RIG

Patent #:	NONE	Issue Dt:		Application #:	13283473	Filing Dt:	10/27/2011
Publication #:	US20120109526	Pub Dt:	05/03/2012
Title:	Method And System For Evaluating Sensor Data From A Well Service Rig

Patent #:	9057227	Issue Dt:	06/16/2015	Application #:	13815526	Filing Dt:	03/09/2013
Publication #:	US20130266404	Pub Dt:	10/10/2013
Title:	Pipe handling apparatus

Patent #:	9027416	Issue Dt:	05/12/2015	Application #:	14050197	Filing Dt:	10/09/2013
Publication #:	US20140174731	Pub Dt:	06/26/2014
Title:	METHOD AND SYSTEM FOR CONTROLLING TONGS MAKE-UP SPEED AND EVALUATING AND CONTROLLING TORQUE AT THE TONGS

Patent #:	9458683	Issue Dt:	10/04/2016	Application #:	14083978	Filing Dt:	11/19/2013
Publication #:	US20140151021	Pub Dt:	06/05/2014
Title:	MECHANIZED AND AUTOMATED WELL SERVICE RIG SYSTEM

Patent #:	9562406	Issue Dt:	02/07/2017	Application #:	14083996	Filing Dt:	11/19/2013
Publication #:	US20140138081	Pub Dt:	05/22/2014
Title:	MECHANIZED AND AUTOMATED WELL SERVICE RIG

Patent #:	9470050	Issue Dt:	10/18/2016	Application #:	14084017	Filing Dt:	11/19/2013
Publication #:	US20140140791	Pub Dt:	05/22/2014
Title:	MECHANIZED AND AUTOMATED CATWALK SYSTEM

Patent #:	9611707	Issue Dt:	04/04/2017	Application #:	14084040	Filing Dt:	11/19/2013
Publication #:	US20140138080	Pub Dt:	05/22/2014
Title:	TONG SYSTEM FOR TRIPPING RODS AND TUBULARS

Patent #:	9657538	Issue Dt:	05/23/2017	Application #:	14084089	Filing Dt:	11/19/2013
Publication #:	US20140138100	Pub Dt:	05/22/2014
Title:	METHODS OF MECHANIZED AND AUTOMATED TRIPPING OF RODS AND TUBULARS

Patent #:	9605498	Issue Dt:	03/28/2017	Application #:	14084206	Filing Dt:	11/19/2013
Publication #:	US20140140790	Pub Dt:	05/22/2014
Title:	ROD AND TUBULAR RACKING SYSTEM

Assignor

CORTLAND CAPITAL MARKET SERVICES LLC

Exec Dt:

12/15/2015

Assignee

KEY ENERGY SERVICES, LLC

1301 MCKINNEY STREET, SUITE 1800

HOUSTON, TEXAS 77010

Correspondence name and address
	JOANNA MCCALL
	1025 VERMONT AVE NW, SUITE 1130
	NATIONAL CORPORATE RESEARCH, LTD
	WASHINGTON, DC 20005

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