Granted Patent
Utility
US 5,159,634 · App. 07/759,309
Cryptosystem for cellular telephony
Inventor:
James Alexander Reeds, III
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Sep 13, 1991
Inventor
James Alexander Reeds, III
Assignee (at issue)
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.