Granted Patent
Utility
US 4,778,194 · App. 07/072,637
Tractor hitch and adjustable arm
Inventors:
David C. Koch, Thomas Tuttle, Max Juengel
Patented Case
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Granted: Oct 18, 1988
Filed: Jul 13, 1987
Inventors
David C. Koch
Thomas Tuttle
Max Juengel
Assignee (at issue)
J. I. Case 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.