Granted Patent
Utility
US 4,900,995 · App. 07/371,154
Vehicle window wipers with alternating symmetrical overlap
Inventor:
Richard E. Wainwright
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Jun 26, 1989
Inventor
Richard E. Wainwright
Assignee (at issue)
General Motors LLC
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.