Granted Patent
Utility
US 4,969,792 · App. 07/239,558
Truck supporting device
Inventors:
Elwood Blair Ellis, Arthur S. Ellis
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Sep 1, 1988
Inventors
Elwood Blair Ellis
Arthur S. Ellis
Assignee (at issue)
Kelley Company, 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.