Granted Patent
Utility
US 4,502,433 · App. 06/325,176
Valve construction for multi-fuel engine
Inventors:
Theodore H. Becker, Jr., Sam R. Congram, Carl L. McClung
Patented Case
View Patent ↗
Granted: Mar 5, 1985
Filed: Nov 27, 1981
Inventors
Theodore H. Becker, Jr.
Sam R. Congram
Carl L. McClung
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.