Granted Patent
Utility
US 5,877,473 · App. 08/813,745
Element for heating wiper rest area of a transparency and method of fabricating a transparency having a heatable wiper rest area
Inventor:
Harry S. Koontz
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Mar 7, 1997
Inventor
Harry S. Koontz
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.