451 / | HD | ABRADING |
463 | DF | CARRIER FOR RELATIVELY MOVABLE SIMULTANEOUSLY USABLE TOOLS {2} |
464 | DF | .~ For radially movable tools {7} |
465 | DF | .~.~ Centrifugal force urged tools {1} |
466 | DF | .~.~.~ Flexible flail tools {2} |
468 | DF | .~.~.~.~ Including self-sustaining tools {1} |
469 | .~.~.~.~.~ With discrete nondestructible tool-securing means |