Granted Patent
Utility
US 4,337,427 · App. 06/218,877
Selective filter for closed loop servo system
Inventor:
Inge Maudal
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Dec 22, 1980
Inventor
Inge Maudal
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.