US PATENT SUBCLASS 379 / 906
TOUCHTONE MESSAGE TRANSMISSION
Current as of:
June, 1999
Click
HD
for Main Headings
Click for
All Classes
Internet Version by
PATENTEC
© 1999
Terms of Use
379 /
HD
TELEPHONIC COMMUNICATIONS
906
TOUCHTONE MESSAGE TRANSMISSION
DEFINITION
Classification: 379/906
TOUCHTONE MESSAGE TRANSMISSION:
Subject matter comprising a system or device using a standard or modified telephone keypad for transmitting an alphanumeric message over a telephone line or channel.
