US PATENT SUBCLASS 359 / 853
.~.~.~ Light concentrating (e.g., heliostat, etc.), concave, or paraboloidal structure

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

838  DF  MIRROR {14}
850  DF  .~ Plural mirrors or reflecting surfaces {7}
851  DF  .~.~ Composite or echelon mirrors or light concentrating array {2}
853.~.~.~ Light concentrating (e.g., heliostat, etc.), concave, or paraboloidal structure

DEFINITION

Classification: 359/853

Light concentrating (e.g., heliostat, etc.), con-cave, or paraboloidal structure:

(under subclass 851) Subject matter which forms incident radiation into a convergent beam, has a concave configuration, or has a cross section forming a parabola in at least one direction.