Granted Patent
Utility
US 4,462,541 · App. 06/422,710
Constant temperature control for a vehicle compartment heater or heater-air-conditioner
Inventor:
Gary P. Hansen
Patented Case
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Granted: Jul 31, 1984
Filed: Sep 24, 1982
Inventor
Gary P. Hansen
Assignee (at issue)
Red Dot Corporation
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.