US PATENT SUBCLASS 434 / 311
.~.~ Card, sheet, or block

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


434 /   HD   EDUCATION AND DEMONSTRATION

308  DF  AUDIO RECORDING AND VISUAL MEANS {4}
309  DF  .~ Common carrier for visual means and audio recording {2}
311.~.~ Card, sheet, or block {1}
312  DF  .~.~.~> Reading head moved past stationary audio track {1}

DEFINITION

Classification: 434/311

Card, sheet, or block:

(under subclass 309) Subject matter wherein the carrier structure is a card, sheet, block or the like.

SEE OR SEARCH CLASS

360, Dynamic Magnetic Information Storage or Retrieval,

2, for cards having sound information recorded thereon where the information recorded thereon is of a noninstructional nature.