Granted Patent
Utility
US 4,777,847 · App. 07/082,941
Axial drive mechanism
Inventor:
Joseph Pickles
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Aug 4, 1987
Inventor
Joseph Pickles
Assignee (at issue)
Ferro Manufacturing 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.