US PATENT SUBCLASS 396 / 480
.~.~.~ Plural curtains

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
452  DF  .~ Shutter {12}
479  DF  .~.~ Curtain type {1}
480.~.~.~ Plural curtains {1}
481  DF  .~.~.~.~> Curtain width opening adjustable {1}

DEFINITION

Classification: 396/480

Plural curtains:

(under subclass 479) Subject matter having more than one

resilient or flexible sheet to form an opening which passes across the light sensitive material to produce an exposure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

, FOR 882+, for foreign art collections involving a shutter having plural curtains or plates.