US PATENT SUBCLASS 340 / 815.57-- .~.~ Having optical device

US PATENT SUBCLASS 340 / 815.57
.~.~ Having optical device

Current as of: June, 1999
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340 /	HD	COMMUNICATIONS: ELECTRICAL

815.4	DF	VISUAL INDICATION {18}
815.55	DF	.~ Transparent or translucent indicator with means for blocking light {2}
815.57		.~.~ Having optical device

DEFINITION

Classification: 340/815.57

Having optical device:

(under subclass 815.55) Subject matter comprising a lens or a lens system for directing the rays of light from the light

source to affect the formation of the perceptible indication.

SEE OR SEARCH CLASS

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

32, for optical means interposed in viewing path (e.g., filters, lens) in a generic selective display system.

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

515+, for signal reflector and subclasses 642+ for lens.