US PATENT SUBCLASS 74 / *
.~.~ Slidable keys or clutches

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

640  DF  GEARING {31}
325  DF  .~ Interchangeably locked {11}
*.~.~ Slidable keys or clutches {3}
356  DF  .~.~.~> Alternative clutch shaft
*  DD  .~.~.~> Multiple clutch shafts {4}
*  DD  .~.~.~> Single clutch shaft {3}