Granted Patent
Utility
US 4,195,480 · App. 06/004,793
Manifolded multiple hydraulic pump structure
Inventors:
Robert L. Shelby, Bertwin E. Behrends
Patented Case
View Patent ↗
Granted: Apr 1, 1980
Filed: Dec 26, 1978
Inventors
Robert L. Shelby
Bertwin E. Behrends
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.