Granted Patent
Utility
US 5,645,720 · App. 08/398,625
Mounting head with by-pass valve for use with cartridge filters
Inventor:
David L. Godines
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Mar 2, 1995
Inventor
David L. Godines
Assignee (at issue)
R & D Separations, 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.