US PATENT SUBCLASS 455 / 558
.~.~.~ Card control element

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

73  DF  TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) {9}
550  DF  .~ Radiotelephone equipment detail {17}
557  DF  .~.~ Interface attached device (e.g., interface with modem, facsimile, computer, etc.) {2}
558.~.~.~ Card control element

DEFINITION

Classification: 455/558

Card control element:

(under subclass 557) Subject matter wherein the interface is an insertable module which assumes a controlling function in the transferring of signals (e.g., smart card).

(1) Note. This subclass deals with detail of the card or control element circuitry. For a system with billing capability by inserting a card, see search note below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

407, for a system in which a module is used for billing at the subscriber unit.