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Isao Ohtawara
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Gunma, JP
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last 30 patents
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Patent Grant
Automatic telephone answering apparatus
Patent number
4,856,051
Issue date
Aug 8, 1989
Sanyo Electric Co., Ltd.
Isao Ohtawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Party selecting circuit arrangement
Patent number
4,817,133
Issue date
Mar 28, 1989
Sanyo Electric Co., Ltd.
Ryoichi Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone call selector
Patent number
4,802,202
Issue date
Jan 31, 1989
Sanyo Electric Co., Ltd.
Ryoichi Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE