US PATENT SUBCLASS 968 / 435
.~.~ Winding up springs [G04C 1/06]


Current as of: June, 1999
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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.~.~ Winding up springs [G04C 1/06] {3}
436  DD  .~.~.~> By oscillating movement [G04C 1/06B]
437  DD  .~.~.~> By continuous rotating movement [G04C 1/06C]
438  DD  .~.~.~> By stepping rotating movement [G04C 1/06D]