US PATENT SUBCLASS 396 / 545
.~ Vignetter
Current as of: June, 1999
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DEFINITION
Classification: 396/545
Vignetter:
(under subclass 544) Subject matter having means for partially masking a portion of the transverse area of a light path to produce a graduated shading effect.
SEE OR SEARCH CLASS
355, Photocopying,
125+, for a diffusing or masking device used in contact printing.
359, Optics: Systems (Including Communication) and Elements,
599, for miscellaneous optical diffusing systems or elements.