Granted Patent
Utility
US 4,637,488 · App. 06/775,191
Axle assembly
Inventors:
James R. Fotheringham, David L. Morrow
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Sep 12, 1985
Inventors
James R. Fotheringham
David L. Morrow
Assignee (at issue)
Caterpillar Industrial 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.