US PATENT SUBCLASS 74 / 28
.~.~.~ Phonograph type


Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

*  DD  MECHANICAL MOVEMENTS {15}
25  DF  .~ Rotary to or from reciprocating or oscillating {20}
27  DF  .~.~ Reciprocating carriage motions {1}
28.~.~.~ Phonograph type


DEFINITION

Classification: 74/28

(under subclass 27) Mechanisms, especially adapted for moving the tone arm of a phonograph across the record.

SEE OR SEARCH CLASS

369, Dynamic Information Storage or Retrieval,

215+, for such subject matter combined with tone arm structure.