Granted Patent
Utility
US 5,146,472 · App. 07/502,161
Method for imbedding information in modem handshake procedure and modems incorporating the same
Inventor:
Edward Hallman
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Mar 28, 1990
Inventor
Edward Hallman
Assignee (at issue)
General DataComm, 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.