US PATENT SUBCLASS 396 / 494
.~.~.~ Having auxiliary light blocking

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
452  DF  .~ Shutter {12}
493  DF  .~.~ Pivoting or rotating blade type {3}
494.~.~.~ Having auxiliary light blocking

DEFINITION

Classification: 396/494

Having auxiliary light blocking:

(under subclass 493) Subject matter comprising two or more blades to stop light from entering a camera.

(1) Note. One blade allows light to enter an aperture when actuated, while the other blade will block the light so that the blade allowing light can return to its original position without allowing light to enter the aperture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

, FOR 893, for a foreign art collection involving a shutter having pivoting or rotating blade and aperture cover or lid.