Granted Patent
Utility
US 4,324,274 · App. 06/261,110
Selector valve
Inventors:
Kenneth F. Golan, Charles N. Goloff, James L. Schmitt
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Oct 17, 1980
Inventors
Kenneth F. Golan
Charles N. Goloff
James L. Schmitt
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.