Granted Patent
Utility
US 6,000,479 · App. 09/014,349
Slimhole drill system
Inventor:
Loran Ambs
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Jan 27, 1998
Inventor
Loran Ambs
Assignee (at issue)
Western Atlas International, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.