Granted Patent
Utility
US 6,722,686 · App. 10/136,044
Coupler locking device and method
Inventor:
Tim Vander Koy
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: May 1, 2002
Inventor
Tim Vander Koy
Assignee (at issue)
Cequent Trailer Products, 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.