Granted Patent
Utility
US 6,254,118 · App. 09/335,027
Trailer tongue jackknife blocking device
Inventor:
Robert H. Dudley
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Jun 17, 1999
Inventor
Robert H. Dudley
Assignee (at issue)
U-HAUL 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.