US PATENT SUBCLASS 455 / 569
.~.~ Hands-free or loudspeaking arrangement

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}
569.~.~ Hands-free or loudspeaking arrangement {1}
570  DF  .~.~.~> Noise suppression or echo cancellation

DEFINITION

Classification: 455/569

Hands-free or loudspeaking arrangement:

(under subclass 550) Subject matter wherein the radiotelephone equipment contains a special arrangement of its speech-to-electricity transducer component or any particular arrangement which allows communication without requiring a user to hold or be in physical contact with the radiotelephone.

SEE OR SEARCH CLASS

379, Telephonic Communications,

420, for a landline telephone terminal having loudspeaking conversation capability (e.g., hands-free type or speakerphone).