Granted Patent
Utility
US 4,439,716 · App. 06/328,059
Compensation apparatus for an electrohydraulic servovalve
Inventor:
George E. Minnich
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Dec 7, 1981
Inventor
George E. Minnich
Assignee (at issue)
The Singer Company Limited
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.