Granted Patent
Utility
US 4,308,734 · App. 06/141,705
Workpiece detection device for cyclical machines
Inventor:
Charles R. Senft
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Apr 18, 1980
Inventor
Charles R. Senft
Assignee (at issue)
Federal-Mogul LLC
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.