| 400 / | HD | TYPEWRITING MACHINES |
| 521 | DF | FOR TYPING ON CARD IN CARD HOLDER {11} |
| 525 | ![]() | .~ Card holder carrier by platen {5} |
| 526 | DF | .~.~> And actuated in response to platen rotation |
| 527 | DF | .~.~> With platen surface modified for card {2} |
| 528 | DF | .~.~> Holder attached via detachable arms at ends of platen |
| 529 | DF | .~.~> Holder attached via pins on holder or via adhesive attachment |
| 530 | DF | .~.~> Holder attached via element (e.g., band) gripping platen periphery |