Granted Patent
Utility
US 5,139,011 · App. 07/759,873
Unvented gas-fired heater
Inventor:
W. Larry Moon
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Sep 13, 1991
Inventor
W. Larry Moon
Assignee (at issue)
Martin Industries, 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.