Granted Patent
Utility
US 4,696,349 · App. 06/824,413
Farm implement with frame connected thereto by linkage mechanism
Inventors:
J. Richard Harwood, Frank A. Bell
Patented Case
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Granted: Sep 29, 1987
Filed: Jan 31, 1986
Inventors
J. Richard Harwood
Frank A. Bell
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.