Granted Patent
Utility
US 5,117,801 · App. 07/604,797
Combustion system for dual fuel engine
Inventors:
Frederick S. Schaub, Jesse G. Smith
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Oct 26, 1990
Inventors
Frederick S. Schaub
Jesse G. Smith
Assignee (at issue)
Cooper Industries Holdings
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.