Granted Patent
Utility
US 6,722,073 · App. 09/921,443
Barrel blocking device
Inventor:
Larry L. Cossio
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Aug 2, 2001
Inventor
Larry L. Cossio
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.