US PATENT SUBCLASS 359 / 893
SCREEN (E.G., HALFTONE SCREEN, ETC.)


Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

893SCREEN (E.G., HALFTONE SCREEN, ETC.)


DEFINITION

Classification: 359/893

SCREEN (E.G., HALFTONE SCREEN, ETC.):

(under the class definition) Subject matter having at least a plate with a multiplicity of apertures, opaque dots, patterns, or crossed lines which are intended to break up imaging light.

SEE OR SEARCH CLASS

355, Photocopying,

80, for light diffusing in localized areas.

396, Photography,

545, for light diffusing and masking provided for by that class.

430, Radiation Imagery Chemistry: Process, Composition, of Product Thereof, 6+, for chemically defined screens and the process for making the same and subclasses 396+ for process of using the same.