Granted Patent
Utility
US 4,282,898 · App. 06/144,148
Flow metering valve with operator selectable boosted flow
Inventors:
James L. Harmon, John A. Junck
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Nov 29, 1979
Inventors
James L. Harmon
John A. Junck
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.