Granted Patent
Utility
US 4,767,255 · App. 07/101,719
Backhoe boom cylinder bleed circuit
Inventors:
Roger D. Mickelson, Thomas R. Brown
Patented Case
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Granted: Aug 30, 1988
Filed: Sep 28, 1987
Inventors
Roger D. Mickelson
Thomas R. Brown
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.