US PATENT SUBCLASS 362 / 331
.~.~ Plural serial refractors

Current as of: June, 1999
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362 /   HD   ILLUMINATION

317  DF  LIGHT MODIFIER {5}
326  DF  .~ Refractor {7}
331.~.~ Plural serial refractors

DEFINITION

Classification: 362/331

(under subclass 326) Subject matter wherein there is more than one refractor and the refractors are so located with respect to each other that light ray from a source passing through one refractor will also pass through another refractor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

318, for a liquid enclosed within a refractor.