US PATENT SUBCLASS 396 / 239
.~.~ Having indicator
Current as of:
June, 1999
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396 /
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PHOTOGRAPHY
213
DF
EXPOSURE CONTROL CIRCUIT
{23}
238
DF
.~ Manually selective exposure mode {1}
239
.~.~ Having indicator
DEFINITION
Classification: 396/239
Having indicator:
(under subclass 238) Subject matter having means to convey photos:graphic related information to the camera operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
70, for indicator in exposure control system responsive to distance.
88, for indicator in camera structure with a variable focal length camera objective.
147, for indicator with focusing and rangefinding means.
163, for indicator in camera structure with artificial illumination termination control.
201, for indicator with object illumination for exposure.
255, for indicator in exposure control circuit of shutter speed function. 281+, for camera indicator in general.
515, for detachable film holder unit with integral means to show film use which is not visible to operator during normal operation.
578, for fluid treating apparatus testing, calibrating, or
indicating.
SEE OR SEARCH CLASS
345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,
84+, for light-controlling display.
352, Optics: Motion Pictures,
170+, for indicating means visible in viewfinder of motion picture camera.
