US PATENT SUBCLASS 362 / 340
.~.~.~ Curved main surface

Current as of: June, 1999
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362 /   HD   ILLUMINATION

317  DF  LIGHT MODIFIER {5}
326  DF  .~ Refractor {7}
339  DF  .~.~ Prismatic type {1}
340.~.~.~ Curved main surface

DEFINITION

Classification: 362/340

(under subclass 339) Subject matter wherein the intersections of the other opposed surface and a transverse plane is a curve.

SEE OR SEARCH THIS CLASS, SUBCLASS:

333, for prismatic type refractors wherein the surface opposed to the prismatic forms, in intersection with a transverse plane, a plurality of curved convexities.