Granted Patent
Utility
US 4,260,132 · App. 06/108,909
Control valve with improved centering and detent mechanisms
Inventor:
Cyril W. Habiger
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Aug 6, 1979
Inventor
Cyril W. Habiger
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.