Granted Patent
Utility
US 4,590,917 · App. 06/618,964
Space heater for small rooms
Inventor:
Wilhelm Mossbach
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Jun 11, 1984
Inventor
Wilhelm Mossbach
Assignee (at issue)
Philipp Kreiss GmbH & Co. Truma-Geratebau
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.