US PATENT SUBCLASS 347 / 147
.~.~.~ Specific head tip

Current as of: June, 1999
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347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

111  DF  ELECTRIC MARKING APPARATUS OR PROCESSES {3}
112  DF  .~ Electrostatic {8}
141  DF  .~.~ Specific electrostatic head {7}
147.~.~.~ Specific head tip

DEFINITION

Classification: 347/147

Specific head tip:

(under subclass 141) Subject matter comprising details of the writing end of the marker.