347 / | HD | INCREMENTAL PRINTING OF SYMBOLIC INFORMATION |
224 | DF | LIGHT OR BEAM MARKING APPARATUS OR PROCESSES {2} |
225 | DF | .~ Scan of light {12} |
233 | DF | .~.~ Plural beam scan {9} |
241 | DF | .~.~.~ Specific optical structure {3} |
242 | .~.~.~.~ Having mounting or supporting means |