Granted Patent
Utility
US 4,691,682 · App. 06/825,281
Method and apparatus for maximizing internal combustion engine work output by controlled heat release
Inventor:
Lyle O. Hoppie
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Feb 3, 1986
Inventor
Lyle O. Hoppie
Assignee (at issue)
Eaton 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.