Granted Patent
Utility
US 6,698,128 · App. 10/113,302
Adjustable bore paint ball gun
Inventor:
Eric Kessler
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Mar 29, 2002
Inventor
Eric Kessler
Assignee (at issue)
NATIONAL PAINTBALL SUPPLY, 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.