Granted Patent
Utility
US 4,552,238 · App. 06/535,793
Tractor scraper hitch steering and suspension system
Inventor:
Hardin Joyce, Jr.
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Sep 26, 1983
Inventor
Hardin Joyce, Jr.
Assignee (at issue)
Fiatallis North America, 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.