US PATENT SUBCLASS 347 / 203
.~.~ Protective layer

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

171  DF  THERMAL MARKING APPARATUS OR PROCESSES {20}
200  DF  .~ Specific resistance recording element type {8}
203.~.~ Protective layer

DEFINITION

Classification: 347/203

Protective layer:

(under subclass 200) Subject matter comprising chemical composition or configuration details of a wear proof layer disposed above the heat generating layer for preventing oxidation or wear of resistive heating elements constituting the heat generating layer.