Granted Patent
Utility
US 4,766,962 · App. 06/923,280
Furrow forming apparatus for attachment to a tool bar
Inventor:
Roland J. Frase
Patented Case
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Granted: Aug 30, 1988
Filed: Oct 27, 1986
Inventor
Roland J. Frase
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.