Granted Patent
Utility
US 6,802,756 · App. 10/454,091
Diaphragm water gun
Inventor:
Jeffrey Zimmerman
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Jun 4, 2003
Inventor
Jeffrey Zimmerman
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.