Granted Patent
Utility
US 6,742,880 · App. 10/149,106
Dual chamber cartridge
Inventors:
Bruce S. Jones, Stephen A. Anderson, Patrick D. Carter, William A. Putman
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Jun 6, 2002
Inventors
Bruce S. Jones
Stephen A. Anderson
Patrick D. Carter
William A. Putman
Assignee (at issue)
Nu-kote International, 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.