Granted Patent
Utility
US 6,640,986 · App. 10/092,833
Anti-sway hydraulic system for grappler
Inventors:
Daniel Brian Zakula, Sr., Daniel J. Olson
Patented Case
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Granted: Nov 4, 2003
Filed: Mar 7, 2002
Inventors
Daniel Brian Zakula, Sr.
Daniel J. Olson
Assignee (at issue)
MI-JACK PRODUCTS, INC.
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.