Granted Patent
Utility
US 4,161,160 · App. 05/847,530
Fuel additive injection system for diesel engines
Inventors:
George E. Hicks, John W. Litherland, Arlan G. Martin, Lawrence Williams
Patented Case
View Patent ↗
Granted: Jul 17, 1979
Filed: Oct 31, 1977
Inventors
George E. Hicks
John W. Litherland
Arlan G. Martin
Lawrence Williams
Assignee (at issue)
Caterpillar Tractor Co.
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.