Granted Patent
Utility
US 4,363,359 · App. 06/199,034
Locking assembly for well devices
Inventors:
Donald F. Taylor, William G. Boyle
Patented Case
View Patent ↗
Granted: Dec 14, 1982
Filed: Oct 20, 1980
Inventors
Donald F. Taylor
William G. Boyle
Assignee (at issue)
Otis Engineering Corporation
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.