Granted Patent
Utility
US 4,305,513 · App. 06/081,874
Slack cable sensing apparatus
Inventor:
Richard F. Voelz
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Oct 4, 1979
Inventor
Richard F. Voelz
Assignee (at issue)
Renner Manufacturing Company
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.