US PATENT SUBCLASS 396 / 380
.~.~ Variable size of mask opening
Current as of:
June, 1999
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396 /
HD
PHOTOGRAPHY
373
DF
WITH VIEWFINDER
{9}
378
DF
.~ Selective or adjustable viewfinder field {3}
380
.~.~ Variable size of mask opening
DEFINITION
Classification: 396/380
Variable size of mask opening:
(under subclass 378) Subject matter in which a portion of the scene that is viewed is changeable by altering the dimension of a viewing aperture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
435+, for variable frame masking.