US PATENT SUBCLASS 396 / 496
.~.~.~.~ Blade moves in opposite directions on alternate exposures

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}
495  DF  .~.~.~ Shutter blade moves continuously from closed to open to closed position {1}
496.~.~.~.~ Blade moves in opposite directions on alternate exposures

DEFINITION

Classification: 396/496

Blade moves in opposite directions on alternate exposures:

(under subclass 495) Subject matter wherein the blade with the aperture moves first in one way past the second aperture and then moves back past the second aperture when another picture is taken.

SEE OR SEARCH THIS CLASS, SUBCLASS:

, FOR 895, for a foreign art collection involving a shutter having pivoting or rotating blade which moves continuously

from closed to open to closed position in opposite directions on alternate exposures.