Granted Patent
Utility
US 4,476,028 · App. 06/487,974
Heater and water probe
Inventor:
Robert S. Harris
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Apr 25, 1983
Inventor
Robert S. Harris
Assignee (at issue)
Stant 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.