US PATENT SUBCLASS 396 / 233
.~ Having plural photocells

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

213  DF  EXPOSURE CONTROL CIRCUIT {23}
233.~ Having plural photocells {1}
234  DF  .~.~> More than two photometering areas

DEFINITION

Classification: 396/233

Having plural photocells:

(under subclass 213) Subject matter having more than one light responsive device in the exposure control means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

, FOR 729+, for foreign art collections involving camera automatic exposure control having plural photocells.

SEE OR SEARCH CLASS

250, Radiant Energy,

200+, for generic photocell circuits.