Granted Patent
Utility
US 4,503,580 · App. 06/526,599
Wiper blade coupling structure
Inventor:
Bernard C. Sharp
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Aug 26, 1983
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.