Granted Patent
Utility
US 4,120,069 · App. 05/789,233
Adapter for coupling windshield wiper blade holder with hooked wiper arm
Inventors:
Bernard C. Sharp, John T. Petrik
Patented Case
View Patent ↗
Granted: Oct 17, 1978
Filed: Apr 20, 1977
Inventors
Bernard C. Sharp
John T. Petrik
Assignee (at issue)
Parker-Hannifin 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.