Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04N
PICTORIAL COMMUNICATION, e.g. TELEVISION
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H04N7/14
Systems for two-way working
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H04N7/141
between two video terminals, e.g. videophone
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H04N7/142
Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
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