Granted Patent
Utility
US 5,396,047 · App. 07/944,445
Electric heating unit with alternately heated surface areas
Inventors:
Wilfried Schilling, Robert Kicherer
Patented Case
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Granted: Mar 7, 1995
Filed: Sep 14, 1992
Inventors
Wilfried Schilling
Robert Kicherer
Assignee (at issue)
E.G.O. Elektro-Gerate Blanc u. Fischer
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.