Granted Patent
Utility
US 5,617,837 · App. 08/243,250
Air gun with pressure relief valve
Inventor:
Franz Momirov
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: May 16, 1994
Inventor
Franz Momirov
Assignee (at issue)
Crosman 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.