US PATENT SUBCLASS 74 / 457
.~ Teeth

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

640  DF  GEARING {31}
457.~ Teeth {3}
458  DF  .~.~> Worm and helical {1}
459.5  DF  .~.~> Bevel
460  DF  .~.~> Spur {2}

DEFINITION

Classification: 74/457

(under subclass 640) Subcombinations comprising the gear teeth of meshing gears.