Granted Patent
Utility
US 6,263,577 · App. 09/323,893
Automatic spring retractable utility knife
Inventor:
Jeffrey W. Wonderley
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: Jun 2, 1999
Inventor
Jeffrey W. Wonderley
Assignee (at issue)
American Safety Razor
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.