Granted Patent
Utility
US 4,717,495 · App. 06/835,010
Diesel engine cooling system compositions
Inventors:
Richard D. Hercamp, Roy Hudgens
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Feb 28, 1986
Inventors
Richard D. Hercamp
Roy Hudgens
Assignee (at issue)
Fleetguard, Inc.
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.