US PATENT SUBCLASS 237 / 76
.~ Ceramic

Current as of: June, 1999
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237 /   HD   HEATING SYSTEMS

70  DF  HEAT RADIATORS {6}
76.~ Ceramic

DEFINITION

Classification: 237/76

(under subclass 70) Radiators made in whole or in part of ceramic material (earthy plastic) or natural stone.

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69, for floor-type heating systems.