John A. Nelson

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulically activated firing head for well perforating guns
- Patent number 4,880,056
- Issue date Nov 14, 1989
- Baker Oil Tools, Inc.
- John A. Nelson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulically activated firing head for well perforating guns
- Patent number 4,817,718
- Issue date Apr 4, 1989
- Baker Oil Tools, Inc.
- John A. Nelson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Redundant firing mechanism for a well perforating gun
- Patent number 4,610,312
- Issue date Sep 9, 1986
- Baker Oil Tools, Inc.
- John A. Nelson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Perforation and isolation apparatus
- Patent number 4,576,236
- Issue date Mar 18, 1986
- Baker Oil Tools, Inc.
- Gregg W. Stout
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of detachably securing an explosive charge container in a ho...
- Patent number 4,543,700
- Issue date Oct 1, 1985
- Baker Oil Tools, Inc.
- Gregg W. Stout
- F42 - AMMUNITION BLASTING
Information Patent Grant
Subterranean well casing perforating gun
- Patent number 4,479,556
- Issue date Oct 30, 1984
- Baker Oil Tools, Inc.
- Gregg W. Stout
- F42 - AMMUNITION BLASTING