Granted Patent
Utility
US 5,208,441 · App. 07/919,081
Plasma arc ignition system
Inventor:
Daniel M. Broberg
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jul 23, 1992
Inventor
Daniel M. Broberg
Assignee (at issue)
Scepter Manufacturing, LLC.
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.