Granted Patent
Utility
US 4,434,449 · App. 06/383,230
Protector unit for telecommunications circuits
Inventor:
Larry W. Dickey
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: May 28, 1982
Inventor
Larry W. Dickey
Assignee (at issue)
Bell Telephone Laboratories, 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.