Granted Patent
Utility
US 4,309,596 · App. 06/162,457
Flexible self-limiting heating cable
Inventor:
George C. Crowley
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Jun 24, 1980
Inventor
George C. Crowley
Assignee (at issue)
Sunbeam Corporation Limited
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.