Granted Patent
Utility
US 4,583,567 · App. 06/545,778
Valves
Inventor:
Ronnie A. Arav
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Oct 27, 1983
Inventor
Ronnie A. Arav
Assignee (at issue)
Beloit 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.