Granted Patent
Utility
US 4,510,348 · App. 06/479,249
Non-shielded, fire-resistant plenum cable
Inventors:
Candido J. Arroyo, Nicholas J. Cogelia, Ralph J. Darsey
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: Mar 28, 1983
Inventors
Candido J. Arroyo
Nicholas J. Cogelia
Ralph J. Darsey
Assignees (at issue)
AT&T Technologies Incorporated
AT&T Bell Laboratories
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.