Granted Patent
Utility
US 4,719,940 · App. 06/904,346
Adjustable tied-diaphragm gas pressure regulator
Inventor:
Michael Beavers
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Sep 5, 1986
Inventor
Michael Beavers
Assignee (at issue)
VICTOR EQUIPMENT COMPANY
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.