| 347 / | HD | INCREMENTAL PRINTING OF SYMBOLIC INFORMATION |
| 224 | DF | LIGHT OR BEAM MARKING APPARATUS OR PROCESSES {2} |
| 225 | DF | .~ Scan of light {12} |
| 226 | DF | .~.~ Cathode ray device {5} |
| 230 | ![]() | .~.~.~ Having optical means interposed between the screen of the cathode ray device and the record receiver |