US PATENT SUBCLASS 126 / 679
.~.~ Specific chemical

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

569  DF  SOLAR HEAT COLLECTOR {18}
678  DF  .~ Particular fluent medium including radiation absorbing material {1}
679.~.~ Specific chemical

DEFINITION

Classification: 126/679

Specific chemical:

(under subclass 678) Apparatus wherein significance is attributed to the elemental composition of the matter.

(1) Note. A patent proper for this subclass will have at least one claim wherein the matter is identified by its chemical name.