Granted Patent
Utility
US 4,255,118 · App. 05/898,175
Electric ignition system
Inventor:
Jay R. Katchka
Patented Case
View Patent ↗
Granted: Mar 10, 1981
Filed: Apr 20, 1978
Inventor
Jay R. Katchka
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.