US PATENT SUBCLASS 380 / 53
.~.~ Audio transducer mounting or structure

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

9  DF  ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) {18}
52  DF  .~ Including particular structure or housing (e.g., display, keyboard) {1}
53.~.~ Audio transducer mounting or structure

DEFINITION

Classification: 380/53

Audio transducer mounting or structure:

(under subclass 52) Subject matter including a structural detail or an audio sensing or reproducing transducer or a mounting therefor.

SEE OR SEARCH CLASS

181, Acoustics, appropriate subclasses for an audio transducer housing.

379, Telephonic Communications, appropriate subclasses for a bidirectional speech circuit or audio terminal, not including cryptos:graphic equipment.

381, Electrical Audio Signal Processing Systems and Devices,

150+, for an electrical transducer not connected to cryptos:graphic equipment.