Granted Patent
Utility
US 4,342,478 · App. 06/163,472
Knob-connector spring
Inventor:
William R. Foshee
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Jun 27, 1980
Inventor
William R. Foshee
Assignee (at issue)
Best Lock 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.