US PATENT SUBCLASS 968 / 437
.~.~.~ By continuous rotating movement [G04C 1/06C]


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968 /   HD   HOROLOGY

426  DD  WINDING MECHANICAL CLOCKS ELECTRICALLY (winding mechanically subclass 23; electrical winding of spring-driven arrangements for gramophones G11B 19/20) [G04C 1/00] {5}
434  DD  .~ By electric motors with rotating or with reciprocating movement [G04C 1/04] {2}
435  DD  .~.~ Winding up springs [G04C 1/06] {3}
437.~.~.~ By continuous rotating movement [G04C 1/06C]