US PATENT SUBCLASS 237 / 1 SL
.~ Special liquid

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

1 R  DF  MISCELLANEOUS {1}
1 SL.~ Special liquid

Unofficial Alpha Subclasses: R SL

DEFINITION

Classification: 237/1

(under the class definition) Means for heating not otherwise provided for.