Granted Patent
Utility
US 4,904,434 · App. 07/263,915
Method of forming an improved wiper blade
Inventor:
Michael L. Hyer
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Oct 28, 1988
Inventor
Michael L. Hyer
Assignee (at issue)
JMK International, Inc.
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.