Granted Patent
Utility
US 4,303,385 · App. 06/047,130
Direct ignition system for gas appliance with DC power source
Inventors:
George Rudich, Jr., Russell B. Matthews
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Jun 11, 1979
Inventors
George Rudich, Jr.
Russell B. Matthews
Assignee (at issue)
Johnson Controls, Inc.
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.