US PATENT SUBCLASS 359 / 451
.~ Curved

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

443  DF  PROJECTION SCREEN {13}
451.~ Curved

DEFINITION

Classification: 359/451

Curved:

(under subclass 443) Subject matter wherein the surface of the screen is articulated rather than flat.

(1) Note. In this subclass the overall shape or surface of the screen is curved but subclasses 455 and 459 have curved individual elements but the overall surface of the screen is generally flat.