US PATENT SUBCLASS 369 / 163
.~.~.~.~ With sound modification

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

99  DF  SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4}
127  DF  .~ Mechanical modification or sensing of storage medium {6}
155  DF  .~.~ Mechanical conversion to or from sound {4}
160  DF  .~.~.~ Sound box {6}
163.~.~.~.~ With sound modification

DEFINITION

Classification: 369/163

With sound modification:

(under subclass 160) Subject matter having acoustical structure for amplifying, muffling or filtering the incident or reproduce sound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, for mechanical amplification of sound box vibration.

SEE OR SEARCH CLASS

181, Acoustics, for structure to handle sound, in general.