Granted Patent
Utility
US 4,620,521 · App. 06/631,945
Modular, programmable high energy ignition system
Inventors:
Robert M. Henderson, Richard Zechlin
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Jul 18, 1984
Inventors
Robert M. Henderson
Richard Zechlin
Assignee (at issue)
Colt Industries Operating Corporation
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.