Granted Patent
Utility
US 4,702,277 · App. 06/937,461
Cylinder valve-regulator
Inventor:
Louis A. Ollivier
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Dec 2, 1986
Inventor
Louis A. Ollivier
Assignee (at issue)
Veriflo 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.