US PATENT SUBCLASS 126 / 699
.~.~ Circular lens

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

569  DF  SOLAR HEAT COLLECTOR {18}
698  DF  .~ With concentrating lens {2}
699.~.~ Circular lens

DEFINITION

Classification: 126/699

Circular lens:

(under subclass 698) Apparatus wherein the perimeter of the refractor forms a circle.