Granted Patent
Utility
US 4,220,389 · App. 06/065,865
Circuit card connector
Inventor:
Mark S. Schell
Patented Case
View Patent ↗
Granted: Sep 2, 1980
Filed: Aug 13, 1979
Inventor
Mark S. Schell
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.