Inventor
GERHAUSER JR STEPHEN LEE
US6 patents
Patents
6 patentsUS9249655B1Feb 2, 2016
Control system for a top drive
KEAST LARRY G47 citations92
US8387720B1Mar 5, 2013
Drilling rig with a control system for rotationally rocking a drill string with a top drive
KEAST LARRY G48 citations92
US11208854B2Dec 28, 2021
Combination tubular handler and power swivel unit
KEAST LARRY G2 citations69
US10851601B2Dec 1, 2020
Combination tubular handler and power swivel unit
KEAST LARRY G4 citations69
US11549960B2Jan 10, 2023
System and method for monitoring one or more parameters of a top drive with a single sensor
KEAST LARRY G0 citations61
US11639638B2May 2, 2023
Combination tubular handler and power swivel unit
KEAST LARRY G0 citations59