Granted Patent
Utility
US 4,998,784 · App. 07/238,799
Automotive windshield for a head up display system
Inventors:
Glenn Freeman, James L. Valimont, James H. Dunaway, Karen J. Korenkiewicz
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Aug 31, 1988
Inventors
Glenn Freeman
James L. Valimont
James H. Dunaway
Karen J. Korenkiewicz
Assignee (at issue)
PPG Industries, 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.