Granted Patent
Utility
US 4,337,823 · App. 06/082,005
Electric furnace for mobile and modular homes
Inventor:
Michael J. DelPercio
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Oct 5, 1979
Inventor
Michael J. DelPercio
Assignee (at issue)
Intertherm Inc.
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.