| 451 / | HD | ABRADING |
| 463 | DF | CARRIER FOR RELATIVELY MOVABLE SIMULTANEOUSLY USABLE TOOLS {2} |
| 464 | DF | .~ For radially movable tools {7} |
| 470 | DF | .~.~ Including conoid or wedge tool moving member {2} |
| 471 | DF | .~.~.~ With threaded operator {2} |
| 472 | DF | .~.~.~.~ To move conoid member {4} |
| 476 | | .~.~.~.~.~ Including plural conoid members |