Granted Patent
Utility
US 6,643,454 · App. 10/262,565
Bath temperature maintenance heater
Inventor:
Gary P. Rochelle
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Oct 1, 2002
Inventor
Gary P. Rochelle
Assignee (at issue)
Alpha-Western 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.