Granted Patent
Utility
US 4,336,827 · App. 06/261,096
Valve actuator with hydraulic latching
Inventor:
Kenneth F. Golan
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Oct 17, 1980
Inventor
Kenneth F. Golan
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.