Granted Patent
Utility
US 5,697,157 · App. 08/712,595
Heavy-duty box opener
Inventor:
Earl Votolato
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Sep 13, 1996
Inventor
Earl Votolato
Assignee (at issue)
Spellbound Development 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.