(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.
