Granted Patent
Utility
US 4,738,239 · App. 07/080,421
Ignition system
Inventors:
David L. Haines, Daniel H. Hopper
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Jul 31, 1987
Inventors
David L. Haines
Daniel H. Hopper
Assignee (at issue)
DELCO ELECTRONICS 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.