Stephen Lee Gerhauser Jr.

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 11,639,638
- Issue date May 2, 2023
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
System and method for monitoring one or more parameters of a top dr...
- Patent number 11,549,960
- Issue date Jan 10, 2023
- Larry G. Keast
- G01 - MEASURING TESTING
Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 11,208,854
- Issue date Dec 28, 2021
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination tubular handler and power swivel unit
- Patent number 10,851,601
- Issue date Dec 1, 2020
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Control system for a top drive
- Patent number 9,249,655
- Issue date Feb 2, 2016
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling rig with a control system for rotationally rocking a drill...
- Patent number 8,387,720
- Issue date Mar 5, 2013
- Larry G. Keast
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20230220736
- Publication date Jul 13, 2023
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20220090453
- Publication date Mar 24, 2022
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
SYSTEM AND METHOD FOR MONITORING ONE OR MORE PARAMETERS OF A TOP DR...
- Publication number 20210389341
- Publication date Dec 16, 2021
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20210040801
- Publication date Feb 11, 2021
- Larry G. Keast
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINATION TUBULAR HANDLER AND POWER SWIVEL UNIT
- Publication number 20200048971
- Publication date Feb 13, 2020
- Larry G. Keast
- E21 - EARTH DRILLING MINING