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Hajime Yokoyama
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Saitama, JP
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last 30 patents
Information
Patent Grant
Electronic tuning circuit for an AM receiver
Patent number
5,678,212
Issue date
Oct 14, 1997
Toko Kabushiki Kaisha
Koichi Sakai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic tuning circuit for AM receiver
Patent number
4,847,572
Issue date
Jul 11, 1989
Toko, Inc.
Hajime Yokoyama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Electronic tuning circuit for AM receiver which is easy to effect t...
Patent number
4,837,852
Issue date
Jun 6, 1989
Toko, Inc.
Noboru Takada
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Electronic tuning receiver
Patent number
4,794,650
Issue date
Dec 27, 1988
Toko, Inc.
Hajime Yokoyama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Tuning circuit for AM receiver
Patent number
4,742,569
Issue date
May 3, 1988
Toko, Inc.
Hajime Yokoyama
H03 - BASIC ELECTRONIC CIRCUITRY