Granted Patent
Utility
US 4,667,994 · App. 06/826,843
Frangible spindle
Inventor:
William R. Foshee
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Feb 6, 1986
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.