Granted Patent
Utility
US 4,872,205 · App. 07/087,725
Radio communication system having autonomously selected transmission frequencies
Inventor:
James W. Smith
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Aug 21, 1987
Inventor
James W. Smith
Assignees (at issue)
American Telephone and Telegraph, Co.
AT&T Information Systems 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.