Granted Patent
Utility
US 6,568,381 · App. 09/969,759
Triggering mechanism for paint ball guns
Inventor:
Yung-Che Chang
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Oct 4, 2001
Inventor
Yung-Che Chang
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.