US PATENT SUBCLASS 301 / 5.7
.~.~ With antifriction bearing

Current as of: June, 1999
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301 /   HD   LAND VEHICLES: WHEELS AND AXLES

5.1  DF  WHEEL {21}
5.3  DF  .~ Skate {1}
5.7.~.~ With antifriction bearing

DEFINITION

Classification: 301/5.7

(under subclass 5.3) Wheel having an antifriction bearing.