US PATENT SUBCLASS 353 / 89
.~ Plural projection paths

Current as of: June, 1999
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353 /   HD   OPTICS: IMAGE PROJECTORS

88  DF  SHUTTER {4}
89.~ Plural projection paths {1}
90  DF  .~.~> Dissolve type

DEFINITION

Classification: 353/89

(under subclass 88) Subject matter including two or more optical paths for projection of pictures with either a shutter for each path or a shutter which alternately blocks the two paths.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures,

205+, for a motion-picture machine having plural light paths and a shutter.