Granted Patent
Utility
US 3,986,492 · App. 05/537,903
Water heater for recreational vehicles
Inventor:
Donald M. White, III
Patented Case
View Patent ↗
Granted: Oct 19, 1976
Filed: Jan 2, 1975
Inventor
Donald M. White, III
Assignee (at issue)
Atwood Vacuum Machine 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.