Granted Patent
Utility
US 6,357,120 · App. 09/374,523
Front-loading adjustable safety utility knife with safety quick-release lock
Inventors:
Zareh Khachatoorian, Qui Jian Ping
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Aug 14, 1999
Inventors
Zareh Khachatoorian
Qui Jian Ping
Assignee (at issue)
Olympia Group, 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.