US PATENT SUBCLASS 396 / 461
.~.~.~ Diaphragm blades open for focusing or viewing

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
452  DF  .~ Shutter {12}
458  DF  .~.~ Including diaphragm {3}
461.~.~.~ Diaphragm blades open for focusing or viewing

DEFINITION

Classification: 396/461

Diaphragm blades open for focusing or viewing:

(under subclass 458) Subject matter having means for moving blades of a diaphragm to allow the maximum amount of light to pass through for focusing or viewing or means to hold blades of a diaphragm fully open until the shutter release is actuated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

509, for a diaphragm, per se, which opens for focusing or viewing.

, FOR 872, for a foreign art collection involving a shutter and diaphragm which opens for focusing or viewing.