Granted Patent
Utility
US 5,404,421 · App. 08/009,931
Fuel heating element mounting plug housing a thermostat
Inventors:
Louis Wallace, Randall Markum
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Jan 27, 1993
Inventors
Louis Wallace
Randall Markum
Assignee (at issue)
Emerson Electric Co.
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.