Granted Patent
Utility
US 6,237,725 · App. 09/536,048
Cart automatic brake mechanism
Inventors:
Daniel Leigh Otterson, Gary Erickson
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Mar 27, 2000
Inventors
Daniel Leigh Otterson
Gary Erickson
Assignee (at issue)
Smarte Carte, 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.