Granted Patent
Utility
US 6,438,849 · App. 09/814,107
Automatic spring retractable utility knife
Inventor:
Jeffrey W. Wonderley
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Mar 22, 2001
Inventor
Jeffrey W. Wonderley
Assignee (at issue)
Safety Razor Company
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.