Granted Patent
Utility
US 4,935,606 · App. 07/284,342
Method of operating gas furnace igniter
Inventor:
Frederick J. Geary
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Dec 14, 1988
Inventor
Frederick J. Geary
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.