Bobby J. Hallmark

Person

Fort Worth, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Borehole televiewer system
- Patent number 5,043,948
- Issue date Aug 27, 1991
- Halliburton Logging Services, Inc.
- Bobby J. Hallmark
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Method and apparatus for obtaining a core sample at ambient pressure
- Patent number 4,950,844
- Issue date Aug 21, 1990
- Halliburton Logging Services Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Selective earth formation testing through well casing
- Patent number 4,369,654
- Issue date Jan 25, 1983
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well formation test-treat-test apparatus and method
- Patent number 4,339,948
- Issue date Jul 20, 1982
- Gearhart Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Calibrated conduit caliper and method
- Patent number 4,302,881
- Issue date Dec 1, 1981
- Gearhart Industries, Inc.
- Edward C. Schwind
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for testing earth formations in boreholes
- Patent number 4,292,842
- Issue date Oct 6, 1981
- Gearhart Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for testing earth formations in boreholes
- Patent number 4,270,385
- Issue date Jun 2, 1981
- Gearhart-Owen Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for testing earth formations in boreholes
- Patent number 4,248,081
- Issue date Feb 3, 1981
- Gearhart-Owen Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for testing earth formations in boreholes
- Patent number 4,246,782
- Issue date Jan 27, 1981
- Gearhart-Owen Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sealing projectile
- Patent number 4,164,886
- Issue date Aug 21, 1979
- Gearhart-Owen Industries, Inc.
- Bobby J. Hallmark
- E21 - EARTH DRILLING MINING
Information Patent Grant
Chamber isolator and sealing means for borehole perforating tools
- Patent number 4,089,381
- Issue date May 16, 1978
- Gearhart-Owen Industries, Inc.
- Bobby J. Hallmark
- F42 - AMMUNITION BLASTING

Bobby J. Hallmark

Person

Patents Grantslast 30 patents

Borehole televiewer system

Method and apparatus for obtaining a core sample at ambient pressure

Selective earth formation testing through well casing

Well formation test-treat-test apparatus and method

Calibrated conduit caliper and method

Tool for testing earth formations in boreholes

Tool for testing earth formations in boreholes

Tool for testing earth formations in boreholes

Tool for testing earth formations in boreholes

Sealing projectile

Chamber isolator and sealing means for borehole perforating tools