Granted Patent
Utility
US 5,186,147 · App. 07/682,625
Multi-port return type pressure regulator
Inventor:
Peter Damion Bellis
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Apr 9, 1991
Inventor
Peter Damion Bellis
Assignee (at issue)
Mallory, 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.