Granted Patent
Utility
US 6,746,091 · App. 10/001,828
Cart locking device
Inventors:
Timothy A. Friar, Paul E. Hsu, Jay F. Perkins, Robert Roth
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Dec 5, 2001
Inventors
Timothy A. Friar
Paul E. Hsu
Jay F. Perkins
Robert Roth
Assignee (at issue)
Artromick International, 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.