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Patent Assignment Details

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Reel/Frame:	005208/0161			Pages:	19
		Recorded:	06/15/1989
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Total properties: 72

Patent #:	3693142	Issue Dt:		Application #:	04479010	Filing Dt:
Title:

Patent #:	3704406	Issue Dt:		Application #:	04879006	Filing Dt:
Title:

Patent #:	3704407	Issue Dt:		Application #:	04879007	Filing Dt:
Title:

Patent #:	3771118	Issue Dt:		Application #:	04879009	Filing Dt:
Title:

Patent #:	3699510	Issue Dt:		Application #:	04879011	Filing Dt:
Title:

Patent #:	3724086	Issue Dt:		Application #:	05026044	Filing Dt:
Title:

Patent #:	3703832	Issue Dt:		Application #:	05038263	Filing Dt:
Title:

Patent #:	3713500	Issue Dt:		Application #:	05048092	Filing Dt:
Title:

Patent #:	3718194	Issue Dt:		Application #:	05086877	Filing Dt:
Title:

Patent #:	3741013	Issue Dt:		Application #:	05086879	Filing Dt:
Title:

Patent #:	3742444	Issue Dt:		Application #:	05086915	Filing Dt:
Title:

Patent #:	3765494	Issue Dt:		Application #:	05246293	Filing Dt:
Title:

Patent #:	3804168	Issue Dt:		Application #:	05263725	Filing Dt:
Title:

Patent #:	3798976	Issue Dt:		Application #:	05290285	Filing Dt:
Title:

Patent #:	3805398	Issue Dt:		Application #:	05301044	Filing Dt:
Title:

Patent #:	3810387	Issue Dt:		Application #:	05313367	Filing Dt:
Title:

Patent #:	3841420	Issue Dt:		Application #:	05343458	Filing Dt:
Title:

Patent #:	3906471	Issue Dt:	09/16/1975	Application #:	05396627	Filing Dt:	09/12/1973
Title:	HIGH SIDE METER

Patent #:	3914694	Issue Dt:		Application #:	05396628	Filing Dt:
Title:

Patent #:	3935642	Issue Dt:		Application #:	05396634	Filing Dt:
Title:

Patent #:	3930220	Issue Dt:		Application #:	05396635	Filing Dt:
Title:

Patent #:	3876471	Issue Dt:		Application #:	05396978	Filing Dt:
Title:

Patent #:	3883788	Issue Dt:		Application #:	05409850	Filing Dt:
Title:

Patent #:	3895527	Issue Dt:		Application #:	05414060	Filing Dt:
Title:

Patent #:	3969662	Issue Dt:		Application #:	05414061	Filing Dt:
Title:

Patent #:	3898877	Issue Dt:	08/12/1975	Application #:	05414062	Filing Dt:	11/08/1973
Title:

Patent #:	3889228	Issue Dt:		Application #:	05416467	Filing Dt:
Title:

Patent #:	3933395	Issue Dt:		Application #:	05424617	Filing Dt:
Title:

Patent #:	3904970	Issue Dt:		Application #:	05441620	Filing Dt:
Title:

Patent #:	3915010	Issue Dt:		Application #:	05462914	Filing Dt:
Title:

Patent #:	3970877	Issue Dt:		Application #:	05502227	Filing Dt:
Title:

Patent #:	3984918	Issue Dt:		Application #:	05511397	Filing Dt:
Title:

Patent #:	4021773	Issue Dt:		Application #:	05518922	Filing Dt:
Title:

Patent #:	3935643	Issue Dt:		Application #:	05528391	Filing Dt:
Title:

Patent #:	3985027	Issue Dt:		Application #:	05594912	Filing Dt:
Title:

Patent #:	4010642	Issue Dt:	03/08/1977	Application #:	05606911	Filing Dt:
Title:	BOREHOLE PRESSURE MEASUREMENT

Patent #:	4018088	Issue Dt:		Application #:	05638392	Filing Dt:
Title:

Patent #:	4019148	Issue Dt:		Application #:	05644686	Filing Dt:
Title:

Patent #:	4047439	Issue Dt:		Application #:	05658866	Filing Dt:
Title:

Patent #:	4071959	Issue Dt:		Application #:	05665518	Filing Dt:
Title:

Patent #:	4069591	Issue Dt:	01/24/1978	Application #:	05666796	Filing Dt:
Title:	ELASTOMERIC INCLINOMETER

Patent #:	4200297	Issue Dt:		Application #:	05722540	Filing Dt:
Title:

Patent #:	4083117	Issue Dt:		Application #:	05726199	Filing Dt:
Title:

Patent #:	4156229	Issue Dt:		Application #:	05763879	Filing Dt:
Title:

Patent #:	4139836	Issue Dt:	02/13/1979	Application #:	05812168	Filing Dt:	07/01/1977
Title:	BOREHOLE ACOUSTIC TELEMETRY SYSTEM

Patent #:	4171578	Issue Dt:		Application #:	05860938	Filing Dt:
Title:

Patent #:	4163324	Issue Dt:	08/07/1979	Application #:	05880873	Filing Dt:	02/23/1978
Title:	SURVEYING OF BOREHOLES

Patent #:	4293936	Issue Dt:	10/06/1981	Application #:	05968879	Filing Dt:	12/13/1978
Title:	TELEMETRY SYSTEM

Patent #:	4320473	Issue Dt:	03/16/1982	Application #:	06065474	Filing Dt:	08/10/1979
Title:	BOREHOLE ACOUSTIC TELEMETRY CLOCK SYNCHRONIZATION SYSTEM

Patent #:	4298970	Issue Dt:	11/03/1981	Application #:	06065475	Filing Dt:	08/10/1979
Title:	BOREHOLE ACOUSTIC TELEMETRY SYSTEM SYNCHRONOUS DETECTOR

Patent #:	4293937	Issue Dt:	10/06/1981	Application #:	06065476	Filing Dt:	08/10/1979
Title:	BOREHOLE ACOUSTIC TELEMETRY SYSTEM

Patent #:	4254481	Issue Dt:	03/03/1981	Application #:	06065477	Filing Dt:	08/10/1979
Title:	BOREHOLE TELEMETRY SYSTEM AUTOMATIC GAIN CONTROL

Patent #:	4390975	Issue Dt:	06/28/1983	Application #:	06139046	Filing Dt:	04/10/1980
Title:	DATA TRANSMISSION IN A DRILL STRING

Patent #:	4388969	Issue Dt:	06/21/1983	Application #:	06211614	Filing Dt:	12/01/1980
Title:	BOREHOLE PIPE SIDE ENTRY METHOD AND APPARATUS

Patent #:	4399877	Issue Dt:	08/23/1983	Application #:	06255024	Filing Dt:	04/17/1981
Title:	CONTINUOUS BOREHOLE TELEMETRY SYSTEM AND METHOD

Patent #:	4802150	Issue Dt:	01/31/1989	Application #:	06295457	Filing Dt:	08/24/1981
Title:	MUD PRESSURE CONTROL SYSTEM WITH MAGNETIC TORQUE TRANSFER

Patent #:	4393598	Issue Dt:	07/19/1983	Application #:	06369400	Filing Dt:	04/19/1982
Title:	BOREHOLE TOOL

Patent #:	4484785	Issue Dt:	11/27/1984	Application #:	06408625	Filing Dt:	08/16/1982
Title:	TUBING PROTECTOR

Patent #:	4527425	Issue Dt:	07/09/1985	Application #:	06448531	Filing Dt:	12/10/1982
Title:	SYSTEM FOR DETECTING BLOW OUT AND LOST CIRCULATION IN A BOREHOLE

Patent #:	4562559	Issue Dt:	12/31/1985	Application #:	06510532	Filing Dt:	10/17/1983
Title:	BOREHOLE ACOUSTIC TELEMETRY SYSTEM WITH PHASE SHIFTED SIGNAL

Patent #:	4535429	Issue Dt:	08/13/1985	Application #:	06512308	Filing Dt:	07/11/1983
Title:	APPARATUS FOR SIGNALLING WITHIN A BOREHOLE WHILE DRILLING

Patent #:	4507958	Issue Dt:	04/02/1985	Application #:	06530184	Filing Dt:	09/08/1983
Title:	SURVEYING OF A BOREHOLE FOR POSITION DETERMINATION

Patent #:	4505155	Issue Dt:	03/19/1985	Application #:	06540297	Filing Dt:	10/11/1983
Title:	BOREHOLE PRESSURE MEASURING SYSTEM

Patent #:	4675852	Issue Dt:	06/23/1987	Application #:	06671342	Filing Dt:	11/14/1984
Title:	APPARATUS FOR SIGNALLING WITHIN A BOREHOLE WHILE DRILLING

Patent #:	4636995	Issue Dt:	01/13/1987	Application #:	06764167	Filing Dt:	08/09/1985
Title:	MUD PRESSURE CONTROL SYSTEM

Patent #:	4725197	Issue Dt:	02/16/1988	Application #:	06779722	Filing Dt:	09/24/1985
Title:	DEVICES FOR IMPARTING ROTARY MOTION

Patent #:	4819336	Issue Dt:	04/11/1989	Application #:	07004954	Filing Dt:	01/20/1987
Title:	A METHOD OF DETERMINING THE ORIENTATION OF A SURVEYING INSTRUMENT IN A BOREHOLE

Patent #:	4810105	Issue Dt:	03/07/1989	Application #:	07026949	Filing Dt:	03/17/1987
Title:	BEARING SLEEVES

Patent #:	4794336	Issue Dt:	12/27/1988	Application #:	07087094	Filing Dt:	08/19/1987
Title:	APPARATUS FOR SURVEYING A BOREHOLE COMPRISING A MAGNETIC MEASUREMENT PROBE TO BE MOVED WITHING A DRILL PIPE TO A MEASUREMENT POSITION WITHIN A NON-MAGNETIC COLLAR

Patent #:	4845988	Issue Dt:	07/11/1989	Application #:	07152876	Filing Dt:	02/05/1988
Title:	AN ACCELEROMETER HAVING A PERMANENT MAGNET WITH NON-MAGNETIC END MEMBERS

Patent #:	4970503	Issue Dt:	11/13/1990	Application #:	07222814	Filing Dt:	07/21/1988
Title:	METHOD FOR CONTINUOUSLY AND AUTOMATICALLY MONITORING THE ELECTRICAL OPERABILITY AND CONTROL CAPABILITY IN A LIQUID CRYSTAL DISPLAY UNIT

Patent #:	4848144	Issue Dt:	07/18/1989	Application #:	07253075	Filing Dt:	10/03/1988
Title:	METHOD OF PREDICTING THE TORQUE AND DRAG IN DIRECTIONAL WELLS

Assignor

SPERRY-SUN DRILLING SERVICES, INC., A CORP. OF DE.

Exec Dt:

06/13/1989

Assignee

BAROID TECHNOLOGY, INC., A CORP. OF DE.

DELAWARE

Correspondence name and address
	DOUGLAS H. MAY
	BAROID TECHNOLOGY, INC.
	P.O. BOX 60087
	HOUSTON, TX. 77205

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