Granted Patent
Utility
US 5,203,365 · App. 07/958,092
Excess flow check valve capsule
Inventor:
Wallace W. Velie
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Oct 8, 1992
Inventor
Wallace W. Velie
Assignee (at issue)
Mallard Products, 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.