US PATENT SUBCLASS 33 / 203.11
.~.~ Tread contour

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

501  DF  GAUGE {61}
203  DF  .~ Wheel {6}
203.11.~.~ Tread contour

DEFINITION

Classification: 33/203.11

(under subclass 203) Devices for determining the shape or contour of a wheel tread.