Granted Patent
Utility
US 6,082,952 · App. 08/989,392
Automatic wheel chock system
Inventor:
James C. Alexander
Patented Case
View Patent ↗
Granted: Jul 4, 2000
Filed: Dec 12, 1997
Inventor
James C. Alexander
Assignee (at issue)
United Dominion IND, 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.