Granted Patent
Utility
US 6,330,749 · App. 09/374,524
Adjustable safety utility knife with easily removable blade holder
Inventors:
Zareh Khachatoorian, Jian Ping Qiu
Patented Case
View Patent ↗
Granted: Dec 18, 2001
Filed: Aug 14, 1999
Inventors
Zareh Khachatoorian
Jian Ping Qiu
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.