Granted Patent
Utility
US 5,154,440 · App. 07/575,142
Coupler lock
Inventors:
Robert A. Dolan, Gerald L. Schuld
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Aug 29, 1990
Inventors
Robert A. Dolan
Gerald L. Schuld
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.