Granted Patent
Utility
US 4,488,111 · App. 06/383,875
Coupling devices for operations such as testing
Inventor:
Arnold B. Widdowson
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Jun 1, 1982
Inventor
Arnold B. Widdowson
Assignee (at issue)
AT&T Technologies Incorporated
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.