Granted Patent
Utility
US 5,347,981 · App. 08/117,308
Pilot pressure switch and method for controlling the operation of a furnace
Inventors:
Malcolm Southern, Walter Wolenski
Patented Case
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Granted: Sep 20, 1994
Filed: Sep 7, 1993
Inventors
Malcolm Southern
Walter Wolenski
Assignee (at issue)
Goodman Manufacturing Company, L.P.
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.