US PATENT SUBCLASS 248 / 656
.~.~.~ Screw

Current as of: June, 1999
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248 /   HD   SUPPORTS

637  DF  MACHINERY SUPPORT {15}
646  DF  .~ Movable machine {10}
651  DF  .~.~ Including operator or actuator {3}
656.~.~.~ Screw {1}
657  DF  .~.~.~.~> Horizontally slidable carriage

DEFINITION

Classification: 248/656

Screw:

(under subclass 651) Structure wherein the means comprises a screw.