Michael Skelly

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Pampa, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for rotary power driven swivel drilling
- Patent number 4,890,681
- Issue date Jan 2, 1990
- Michael Skelly
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for rotary power driven swivel drilling
- Patent number 4,832,552
- Issue date May 23, 1989
- Michael Skelly
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic speed control and braking apparatus for draw works
- Patent number 4,610,139
- Issue date Sep 9, 1986
- Michael Skelly
- B66 - HOISTING LIFTING HAULING