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Tokusou Matsuda
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Yokohama, JP
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last 30 patents
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Patent Grant
Video conversation/monitoring system having a remote monitoring fun...
Patent number
5,745,160
Issue date
Apr 28, 1998
Hitachi, Ltd.
Kiyoshi Ishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Audio and video telecommunication system with remote monitoring fun...
Patent number
5,585,839
Issue date
Dec 17, 1996
Hitachi Ltd.
Kiyoshi Ishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE