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

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

Internet Version by PATENTEC © 1999      Terms of Use


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.