US PATENT SUBCLASS 301 / 102
.~.~.~.~.~ Both right- and left-threaded

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

5.1  DF  WHEEL {21}
95  DF  .~ Rim or felly {3}
99  DF  .~.~ Joint {1}
100  DF  .~.~.~ Adjustable {2}
101  DF  .~.~.~.~ Adjustable by use of screw {1}
102.~.~.~.~.~ Both right- and left-threaded

DEFINITION

Classification: 301/102

(under subclass 101) Wheel wherein the screw element is provided at opposite ends with right and left handed threads.