US PATENT SUBCLASS 396 / 141
.~.~.~ Having viewfinder
Current as of:
June, 1999
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396 /
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PHOTOGRAPHY
89
DF
WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS
{28}
138
DF
.~ Mechanical rangefinder {1}
139
DF
.~.~ Rangefinder coupled with focusing {4}
141
.~.~.~ Having viewfinder
DEFINITION
Classification: 396/141
Having viewfinder:
(under subclass 139) Subject matter including an optical device attached to or part of a camera to indicate an extent of a scene to be photographed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
84, for direct viewfinder in camera structure with variable focal length of camera objective.
148, for viewfinder in focusing or rangefinding operation in general.
373+, for camera structure with viewfinder in general.
, FOR 813, for a foreign art collection involving camera structure with rangefinder coupled with focusing and viewfinder.
, FOR 839+, for foreign art collections involving manual camera focusing having viewfinder.
SEE OR SEARCH CLASS
348, Television,
341, for optical viewfinder in video camera, system, and detail.
356, Optics: Measuring and Testing,
8, for combination of a rangefinder and viewfinder, per se.