-
-
-
Method for joining driven pipe
-
Patent number 5,816,479
-
Issue date Oct 6, 1998
-
Premiere, Inc.
-
Lee Matherne
-
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
-
Pile driving hammer improvement
-
Patent number 5,727,639
-
Issue date Mar 17, 1998
-
Matherne; Lee
-
John D. Jeter
-
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
-
-
-
-
-
-
-
-
-
Oil well service tool
-
Patent number 4,413,516
-
Issue date Nov 8, 1983
-
Oil-Well Drilling Control, Inc.
-
Robert E. Croom
-
E21 - EARTH DRILLING MINING