US PATENT SUBCLASS 414 / 530
.~.~.~ With means for locking roller against rotation

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

467  DF  SELF-LOADING OR UNLOADING VEHICLES {8}
507  DF  .~ Conveyor {12}
529  DF  .~.~ Load-engaging roller or rollerway {4}
530.~.~.~ With means for locking roller against rotation

DEFINITION

Classification: 414/530

With means for locking roller against rotation:

(under subclass 529) Apparatus including means for preventing rotation of a roller.