Granted Patent
Utility
US 5,050,839 · App. 07/310,697
Valve
Inventors:
Rennie L. Dickson, Craig W. Godfrey, Kenneth L. Schwendemann, Timothy J. Noack
Patented Case
View Patent ↗
Granted: Sep 24, 1991
Filed: Feb 15, 1989
Inventors
Rennie L. Dickson
Craig W. Godfrey
Kenneth L. Schwendemann
Timothy J. Noack
Assignee (at issue)
Otis Engineering 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.