Granted Patent
Utility
US 5,316,421 · App. 07/968,289
User friendly wheel chock system
Inventors:
Robert L. Bullock, Armand P. Taillon
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Oct 29, 1992
Inventors
Robert L. Bullock
Armand P. Taillon
Assignee (at issue)
STANDARD CAR TRUCK COMPANY
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.