Granted Patent
Utility
US 4,009,503 · App. 05/672,245
Wiper blade unit with fastening clip
Inventor:
Bernard C. Sharp
Patented Case
View Patent ↗
Granted: Mar 1, 1977
Filed: Mar 31, 1976
Inventor
Bernard C. Sharp
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.