US PATENT SUBCLASS 359 / 454
.~ Unitary sheet comprising plural refracting areas
Current as of:
June, 1999
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359 /
HD
OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS
443
DF
PROJECTION SCREEN
{13}
454
.~ Unitary sheet comprising plural refracting areas {1}
455
DF
.~.~
> Lenticular {2}
DEFINITION
Classification: 359/454
Unitary sheet comprising plural refracting areas:
(under subclass 443) Subject matter wherein a plurality of refracting elements are each part of a unitary plate or mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455, for a lenticular screen.
542, for signal reflectors with plural refracting elements formed as a unitary mass.