Granted Patent
Utility
US 4,559,965 · App. 06/569,416
Multiple compensating unloading valve circuit
Inventor:
Roger D. Mickelson
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Jan 9, 1984
Inventor
Roger D. Mickelson
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.