Harper Boyd

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Lake Charles, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Sleeve liner for wireline entry sub assembly and method of use
- Patent number 6,732,805
- Issue date May 11, 2004
- Boyd's Bit Service, Inc.
- Harper Boyd
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sleeve liner for wireline entry sub assembly
- Patent number 6,269,879
- Issue date Aug 7, 2001
- Harper Boyd
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mechanical locking swivel apparatus
- Patent number 5,996,712
- Issue date Dec 7, 1999
- Harper Boyd
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for protecting a steel riser from chemical cut...
- Patent number 5,664,627
- Issue date Sep 9, 1997
- Boyd's Bit Service, Inc.
- Harper Boyd
- E21 - EARTH DRILLING MINING
Information Patent Grant
Borehole drill pipe continuous side entry or exit apparatus and method
- Patent number 4,681,162
- Issue date Jul 21, 1987
- Boyd's Bit Service, Inc.
- Harper Boyd
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Manually actuated mechanical locking swivel
- Publication number 20030127857
- Publication date Jul 10, 2003
- Boyd's Bit Service, Inc.
- Harper Boyd
- E21 - EARTH DRILLING MINING