US PATENT SUBCLASS 362 / 309
.~.~.~.~ With complex surface

Current as of: June, 1999
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362 /   HD   ILLUMINATION

257  DF  LIGHT SOURCE (OR SUPPORT THEREFOR) AND MODIFIER {18}
296  DF  .~ Including reflector {4}
307  DF  .~.~ With or including translucent or transparent modifier {1}
308  DF  .~.~.~ Refractor {1}
309.~.~.~.~ With complex surface

DEFINITION

Classification: 362/309

(under subclass 308) Subject matter wherein one of the surfaces is generated by two or more straight lines or curves moving either linearly or angularly about one or more axes, such surfaces being generally characterized as "faceted" or "corrugated".