Granted Patent
Utility
US 4,877,092 · App. 07/181,915
Near bit offset stabilizer
Inventors:
Charles W. Helm, Vernon E. Koval
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Apr 15, 1988
Inventors
Charles W. Helm
Vernon E. Koval
Assignee (at issue)
Teleco Oilfield Services 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.