US PATENT SUBCLASS 434 / 318
.~ Audio recording on disk

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

308  DF  AUDIO RECORDING AND VISUAL MEANS {4}
318.~ Audio recording on disk

DEFINITION

Classification: 434/318

Audio recording on disk:

(under subclass 308) Subject matter wherein the sound information carrier is a circular plaque (e.g.., a phonograph record, etc.).