Granted Patent
Utility
US 4,286,672 · App. 06/141,449
Rearwardly folding agricultural implement with extendable transport wheels
Inventors:
Clark H. Forsyth, Anton H. G. Van Hooydonk, Harold D. Ralph
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Apr 18, 1980
Inventors
Clark H. Forsyth
Anton H. G. Van Hooydonk
Harold D. Ralph
Assignee (at issue)
International Harvester Company
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.