US PATENT SUBCLASS 301 / 35.63
.~.~.~ By central nut

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

5.1  DF  WHEEL {21}
9.1  DF  .~ Detachable wheel section {10}
35.62  DF  .~.~ Disc wheel bolted to hub {1}
35.63.~.~.~ By central nut

DEFINITION

Classification: 301/35.63

By central nut:

(under subclass 35.62) Wheel wherein the helically ribbed member is concentric with the wheel axis.