Granted Patent
Utility
US 4,615,397 · App. 06/793,087
Agricultural implement with double wing folding mechanism using toggle linkage and hydraulic actuator
Inventor:
Dawson W. Hastings
Patented Case
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Granted: Oct 7, 1986
Filed: Oct 30, 1985
Inventor
Dawson W. Hastings
Assignee (at issue)
Deutz-Allis 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.