Granted Patent
Utility
US 5,453,597 · App. 08/193,565
Electrical heating element and heater incorporating same
Inventor:
Joseph A. McWilliams
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Feb 8, 1994
Inventor
Joseph A. McWilliams
Assignee (at issue)
Ceramaspeed, 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.