Granted Patent
Utility
US 4,793,754 · App. 06/511,205
Process for locking two screwed elements and elements for carrying out this process
Inventor:
Philippe C. Nobileau
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Jul 6, 1983
Inventor
Philippe C. Nobileau
Assignee (at issue)
Vetco Gray, LLC
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.