Granted Patent
Utility
US 4,288,657 · App. 06/135,511
Free-spring wire connector
Inventor:
Arthur F. Swanson
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Mar 31, 1980
Inventor
Arthur F. Swanson
Assignee (at issue)
International Telephone and Telegraph Corporation
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.