Granted Patent
Utility
US 4,477,141 · App. 06/442,931
Tricoupler for modular wiring systems
Inventor:
Edwin C. Hardesty
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Nov 19, 1982
Inventor
Edwin C. Hardesty
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.