Granted Patent
Utility
US 4,644,266 · App. 06/747,668
Method and apparatus for recognizing malfunction in a heater operated with liquid fuel
Inventor:
Fritz Reuter
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jun 21, 1985
Inventor
Fritz Reuter
Assignee (at issue)
J. Eberspachge
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.