Granted Patent
Utility
US 4,826,195 · App. 07/174,275
Auxiliary towing apparatus for tractor trucks and the like
Inventors:
William C. Boyles, Douglas R. Hagge, C. V. Johnston
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Mar 28, 1988
Inventors
William C. Boyles
Douglas R. Hagge
C. V. Johnston
Assignee (at issue)
Cardinal Industries, 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.