Granted Patent
Utility
US 4,697,051 · App. 06/760,867
Data transmission system
Inventors:
Richard D. Beggs, Harold W. Friesen, Wendell G. Nutt
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Jul 31, 1985
Inventors
Richard D. Beggs
Harold W. Friesen
Wendell G. Nutt
Assignee (at issue)
AT&T Technologies Inc., 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.