US PATENT SUBCLASS 455 / 416
.~.~ Call conferencing

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

403  DF  RADIOTELEPHONE SYSTEM {12}
414  DF  .~ Special service {3}
416.~.~ Call conferencing

DEFINITION

Classification: 455/416

Call conferencing:

(under subclass 414) Subject matter which enables three or more terminals to be included in a single call connection.

SEE OR SEARCH CLASS

370, Multiplex Communications,

260+, for conferencing using a multiplex communication technique.

379, Telephonic Communications,

202+, for a call conferencing within a landline telephone network.