Granted Patent
Utility
US 4,840,111 · App. 06/825,136
Energy-conserving regenerative-flow valves for hydraulic servomotors
Inventor:
Kenneth D. Garnjost
Patented Case
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Granted: Jun 20, 1989
Filed: Jan 31, 1986
Inventor
Kenneth D. Garnjost
Assignee (at issue)
Moog 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.