Granted Patent
Utility
US 4,827,981 · App. 07/233,440
Fail-fixed servovalve with controlled hard-over leakage
Inventors:
Ronald J. Livecchi, Donald J. Peters
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Aug 9, 1988
Inventors
Ronald J. Livecchi
Donald J. Peters
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.