US PATENT SUBCLASS 347 / 227
.~.~.~ With record receiver in an evacuated enclosure

Current as of: June, 1999
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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}
227.~.~.~ With record receiver in an evacuated enclosure

DEFINITION

Classification: 347/227

With record receiver in an evacuated enclosure:

(under subclass 226) Subject matter wherein the record receiver travels within an vacuum environment.