US PATENT SUBCLASS 362 / 291
.~.~ Including curved modifying surface

Current as of: June, 1999
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362 /   HD   ILLUMINATION

257  DF  LIGHT SOURCE (OR SUPPORT THEREFOR) AND MODIFIER {18}
290  DF  .~ Louvered or grid type modifier {2}
291.~.~ Including curved modifying surface

DEFINITION

Classification: 362/291

(under subclass 290) Subject matter wherein at least one of the surfaces exposed to light from the light source is nonplanar.