Granted Patent
Utility
US 4,362,089 · App. 06/245,228
Valve system
Inventors:
Kurt B. Melocik, Robert W. Earley
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Jun 16, 1980
Inventors
Kurt B. Melocik
Robert W. Earley
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.