Granted Patent
Utility
US 4,793,377 · App. 07/089,033
Direct drive servo valve
Inventors:
Larry Haynes, Larry L. Lucas
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Aug 24, 1987
Inventors
Larry Haynes
Larry L. Lucas
Assignee (at issue)
E-Systems, 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.