Granted Patent
Utility
US 4,662,350 · App. 06/877,693
Heating apparatus for a water heating for small rooms
Inventor:
Wilhelm Mossbach
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Jun 19, 1986
Inventor
Wilhelm Mossbach
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.