Granted Patent
Utility
US 4,683,606 · App. 06/786,397
Winter wiper blade
Inventor:
Bernard C. Sharp
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Oct 10, 1985
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.