Granted Patent
Utility
US 6,489,597 · App. 09/480,346
Range surface heating unit relay power switching control
Inventor:
Richard E. Hornung
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jan 10, 2000
Inventor
Richard E. Hornung
Assignee (at issue)
General Electric Company
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.