Granted Patent
Utility
US 4,566,530 · App. 06/493,568
Pressure operated shuttle valve
Inventor:
Richmond A. Gooden
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: May 11, 1983
Inventor
Richmond A. Gooden
Assignee (at issue)
United Aircraft Products, Inc.
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.