Granted Patent
Utility
US 6,796,321 · App. 10/173,669
Pressure relief valve
Inventor:
Berton L. Vicars
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jun 19, 2002
Inventor
Berton L. Vicars
Assignee (at issue)
Garnder Denver, 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.