Granted Patent
Utility
US 4,402,174 · App. 06/280,099
Sickle drive with resonant spring on the nondriven end of the sickle
Inventor:
Jerry Boone
Patented Case
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Granted: Sep 6, 1983
Filed: Jul 2, 1981
Inventor
Jerry Boone
Assignee (at issue)
Allis-Chalmers Corporation
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.