Granted Patent
Utility
US 4,343,119 · App. 06/218,496
Beveled lobe anti-skid grating
Inventor:
William A. Bahnfleth
Patented Case
View Patent ↗
Granted: Aug 10, 1982
Filed: Dec 22, 1980
Inventor
William A. Bahnfleth
Assignee (at issue)
Caterpillar Tractor Co.
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.