Granted Patent
Utility
US 4,199,293 · App. 05/967,345
High pressure implement circuit for loader with slow and fast dump position
Inventor:
Wayne A. Peterson
Patented Case
View Patent ↗
Granted: Apr 22, 1980
Filed: Dec 7, 1978
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.