Granted Patent
Utility
US 5,012,977 · App. 07/408,869
Vehicle window washer with washer fluid temperature responsive pressure control
Inventors:
Elgin J. Karklins, Stephen J. Scroggie, Steven L. Tracht, Mark W. Striker
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Sep 18, 1989
Inventors
Elgin J. Karklins
Stephen J. Scroggie
Steven L. Tracht
Mark W. Striker
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.