Granted Patent
Utility
US 4,665,461 · App. 06/836,758
Circuit for reducing electromagnetic interference from magnetic core keyboards
Inventor:
Clifford J. Bader
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Mar 6, 1986
Inventor
Clifford J. Bader
Assignee (at issue)
SYSTEM DEVELOPMENT 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.