Granted Patent
Utility
US 4,265,273 · App. 06/080,646
High pressure implement circuit for loader with slow and fast dump position
Inventor:
Wayne A. Peterson
Patented Case
View Patent ↗
Granted: May 5, 1981
Filed: Oct 1, 1979
Inventor
Wayne A. Peterson
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.