|
Total properties:
31
|
|
|
|
Patent #:
|
|
Issue Dt:
|
02/06/1979
|
Application #:
|
05768040
|
Filing Dt:
|
02/14/1977
|
|
Title:
|
CONTROL VALVE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
11/04/1980
|
Application #:
|
05958458
|
Filing Dt:
|
11/06/1978
|
|
Title:
|
ECCENTRIC SHAFT AND METHOD OF MAKING A SHAFT
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
12/30/1980
|
Application #:
|
06008183
|
Filing Dt:
|
01/31/1979
|
|
Title:
|
MULTIPLE CUP DOWNWELL GAS SEPARATOR
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
04/21/1981
|
Application #:
|
06066631
|
Filing Dt:
|
08/15/1979
|
|
Title:
|
DOWNHOLE SEAL FOR LOW PROFILE OIL WELL PUMPING INSTALLATIONS
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
02/14/1984
|
Application #:
|
06207946
|
Filing Dt:
|
11/18/1980
|
|
Title:
|
DOWNHOLE SEAL FOR LOW PROFILE OIL WELL PUMPING INSTALLATIONS
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
03/06/1984
|
Application #:
|
06233561
|
Filing Dt:
|
02/11/1981
|
|
Title:
|
DRILLING RIG DRAWWORKS HOOK LOAD OVERSPEED PREVENTING SYSTEM
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
10/11/1983
|
Application #:
|
06393192
|
Filing Dt:
|
06/28/1982
|
|
Title:
|
ALLOY STEEL FOR ROLL CASTER SHELL
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
08/28/1984
|
Application #:
|
06411932
|
Filing Dt:
|
08/26/1982
|
|
Title:
|
IMPROVED RECIPROCABLE PUMP
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
08/13/1985
|
Application #:
|
06468341
|
Filing Dt:
|
02/22/1983
|
|
Title:
|
SELF-COMPENSATING OSCILLATORY PUMP CONTROL
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
06/11/1985
|
Application #:
|
06489116
|
Filing Dt:
|
04/27/1983
|
|
Title:
|
BRAKE SYSTEM
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
12/11/1984
|
Application #:
|
06491282
|
Filing Dt:
|
05/03/1983
|
|
Title:
|
POPPET TYPE FLUID VALVE WITH REPLACEABLE WEAR SURFACE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
05/28/1985
|
Application #:
|
06580684
|
Filing Dt:
|
02/16/1984
|
|
Title:
|
OIL WELL STANDING VALVE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
04/30/1985
|
Application #:
|
06611116
|
Filing Dt:
|
05/17/1984
|
|
Title:
|
PEDESTAL CRANE MOUNTING SYSTEM
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
07/22/1986
|
Application #:
|
06621832
|
Filing Dt:
|
06/18/1984
|
|
Title:
|
RECIPROCATING PUMP PISTON
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
04/29/1986
|
Application #:
|
06638426
|
Filing Dt:
|
08/07/1984
|
|
Title:
|
WELL DERRICK
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
03/31/1987
|
Application #:
|
06655215
|
Filing Dt:
|
09/27/1984
|
|
Title:
|
BOOM CRANE CENTERING
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
11/26/1985
|
Application #:
|
06666186
|
Filing Dt:
|
10/29/1984
|
|
Title:
|
LOAD RECALL VALVE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
11/29/1988
|
Application #:
|
06780007
|
Filing Dt:
|
09/25/1985
|
|
Title:
|
OVERLOAD PROTECTION SYSTEM FOR A CRANE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
05/26/1987
|
Application #:
|
06875253
|
Filing Dt:
|
06/17/1986
|
|
Title:
|
UNITIZED CHECK VALVE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
01/05/1988
|
Application #:
|
07011576
|
Filing Dt:
|
02/06/1987
|
|
Title:
|
ROTARY DRIVE APPARATUS FOR DOWNHOLE PUMP
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
03/22/1988
|
Application #:
|
07023384
|
Filing Dt:
|
03/09/1987
|
|
Title:
|
POWER TONGS AND CLAMPING UNITS THEREFOR
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
07/04/1989
|
Application #:
|
07023385
|
Filing Dt:
|
03/09/1987
|
|
Title:
|
APPARATUS FOR MAKING AND BREAKING THREADED WELL PIPE CONNECTIONS
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
11/08/1988
|
Application #:
|
07032180
|
Filing Dt:
|
03/30/1987
|
|
Title:
|
BOOM CRANE CENTERING
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
11/01/1988
|
Application #:
|
07100158
|
Filing Dt:
|
09/23/1987
|
|
Title:
|
SUB ASSEMBLY FOR A SWIVEL
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
03/21/1989
|
Application #:
|
07163580
|
Filing Dt:
|
03/03/1988
|
|
Title:
|
ACTIVE COUNTERBALANCE FOR A POWER SWIVEL DURING WELL DRILLING
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
10/31/1989
|
Application #:
|
07163583
|
Filing Dt:
|
03/03/1988
|
|
Title:
|
SPRING ACTUATED POWER SWIVEL SUPPORT ROLLERS
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
03/07/1989
|
Application #:
|
07163584
|
Filing Dt:
|
03/03/1988
|
|
Title:
|
SUPPORT SYSTEM FOR A TOP DRIVEN DRILLING UNIT
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
08/28/1990
|
Application #:
|
07335725
|
Filing Dt:
|
04/10/1989
|
|
Title:
|
SEAL FOR A PUMP VALVE
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
01/01/1991
|
Application #:
|
07379765
|
Filing Dt:
|
07/14/1989
|
|
Title:
|
POSITIVE LOCK OF A DRIVE ASSEMBLY
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
08/13/1991
|
Application #:
|
07538634
|
Filing Dt:
|
06/13/1990
|
|
Title:
|
APPARATUS FOR SUPPORTING A DIRECT DRIVE DRILLING UNIT IN A POSITION OFFSET FROM THE CENTERLINE OF A WELL
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
02/04/1997
|
Application #:
|
08507630
|
Filing Dt:
|
07/26/1995
|
|
Title:
|
ALLOY STEEL FOR ROLL CASTER SHELL
|
|
