US PATENT SUBCLASS 396 / 452
.~ Shutter

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
452.~ Shutter {12}
453  DF  .~.~> Having braking or damping {3}
457  DF  .~.~> Electro-optical, magneto-optical, or photochromic type
458  DF  .~.~> Including diaphragm {3}
462  DF  .~.~> Having shutter between lens components
463  DF  .~.~> Dynamo-electric actuator {6}
471  DF  .~.~> Plural shutters
472  DF  .~.~> Having mechanical delayed release means (e.g., self-timer) {1}
475  DF  .~.~> Having mechanically delayed closing {3}
479  DF  .~.~> Curtain type {1}
483  DF  .~.~> Sliding plate type {2}
493  DF  .~.~> Pivoting or rotating blade type {3}
502  DF  .~.~> Release or actuator means {2}

DEFINITION

Classification: 396/452

Shutter:

(under subclass 439) Subject matter comprising means to interrupt the light passing through the lens to a light sensitive material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

180+, for shutters synchronized with illumination means.

246+, for exposure control circuit controlling shutter speed function only.

, FOR 866+, for foreign art collections involving details of a camera shutter.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures, appropriate subclasses, especially

204+, for shutters utilized in motion picture apparatus. 355, Photocopying,

121, for shutter utilized in photocopying, and see search notes for other search areas in Class 355.

359, Optics: Systems (Including Communication) and Elements,

227+, for movable opaque light control element, per se; subclasses 237+ for optical modulator (including electro-optical), and subclasses 738+ for lens having light limiting or controlling means, and see notes attached thereto for the line with Class 396.