Granted Patent
Utility
US 4,820,902 · App. 07/138,008
Bus bar arrangement for an electrically heated transparency
Inventor:
F. Howard Gillery
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Dec 28, 1987
Inventor
F. Howard Gillery
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.