Granted Patent
Utility
US 4,283,040 · App. 06/082,204
Pressure operated pilot control shut-off valve
Inventor:
Lawrence A. Kolze
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Oct 5, 1979
Inventor
Lawrence A. Kolze
Assignee (at issue)
Eaton Corporation
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.