Granted Patent
Utility
US 4,121,501 · App. 05/814,379
Flow combining system for dual pumps
Inventor:
Lloyd D. Finley
Patented Case
View Patent ↗
Granted: Oct 24, 1978
Filed: Jul 11, 1977
Inventor
Lloyd D. Finley
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.