US PATENT SUBCLASS 352 / 203
.~ Projector illuminators

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

198  DF  PROJECTION LIGHT SOURCES {5}
203.~ Projector illuminators

DEFINITION

Classification: 352/203

(under subclass 198) Subject matter including an additional light source distinct from the projection light source to illuminate the projecting apparatus or portions thereof to facilitate, for example, threading the film.