US PATENT SUBCLASS 355 / 121
.~.~ With shutter


Current as of: June, 1999
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355 /   HD   PHOTOCOPYING

78  DF  CONTACT PRINTING {15}
113  DF  .~ Light boxes {8}
121.~.~ With shutter


DEFINITION

Classification: 355/121

(under subclass 113) Subject matter including structure for selectively blocking and unblocking the light path to expose the light sensitive material to the photos:graphic light.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, for projection type copier with shutter in the illumination system.

101, for printing machines with shutters.

116, for foot operated shutters.

121, for light box with shutters.

123, for strip film frames having shutters. 124, for frames with shutters.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures, appropriate subclasses, especially

204+, for shutters utilized in motion picture apparatus.

359, Optics: Systems (Including Communication) and Elements,

227+, for shutters generally; and subclasses 738+ for lenses with shutters.

396, Photography,

452+, for camera shutters.