US PATENT SUBCLASS 126 / 689
.~.~.~ Spherical

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

569  DF  SOLAR HEAT COLLECTOR {18}
684  DF  .~ With concentrating reflector {5}
688  DF  .~.~ Spot focus {3}
689.~.~.~ Spherical

DEFINITION

Classification: 126/689

Spherical:

(under subclass 688) Apparatus wherein the first surface is shaped in a manner that all points on the surface are equidistant from a fixed point.