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Archive | 1986

CONSTANT CURRENT FEEDING CIRCUIT OF SUBSCRIBER CIRCUIT

Satou Takashi; Ayano Mitsutoshi; Shibuya Kiyoshi; Itou Shinichi; Hashimoto Yoshito


Archive | 1985

2-WIRE/4-WIRE CONVERTING CIRCUIT

Ayano Mitsutoshi; Shibuya Kiyoshi; Itou Shinichi; Hashimoto Yoshito; Toujiyou Toshirou


Archive | 1987

FEEDING ELECTRIC CURRENT LIMIT CIRCUIT

Takato Kenji; Tojo Toshiro; Iketani Yozo; Ayano Mitsutoshi; Shibuya Kiyoshi


Archive | 1987

TWO-LINE/FOUR-LINE CONVERTING CIRCUIT

Takato Kenji; Tojo Toshiro; Iketani Yozo; Ayano Mitsutoshi; Shibuya Kiyoshi


Archive | 1987

LOOP DETECTING CIRCUIT

Ayano Mitsutoshi; Iketani Yozo; Tojo Toshiro; Takato Kenji; Shibuya Kiyoshi


Archive | 1985

AUTOMATIC LOSS SWITCHING SYSTEM

Shibuya Kiyoshi; Itou Shinichi; Hashimoto Yoshito; Toujiyou Toshirou; Takatou Kenji


Archive | 1984

DIODE SWITCH DRIVING CIRCUIT

Takeda Yoshito; Shibuya Kiyoshi; Ayano Mitsutoshi; Itou Shinichi; Toujiyou Toshirou


Archive | 1984

POWER SUPPLY SYSTEM TO SUBSCRIBER CIRCUIT

Toujiyou Toshirou; Ayano Mitsutoshi; Shibuya Kiyoshi; Itou Shinichi; Takeda Yoshito


Archive | 1983

SWITCHING ELEMENT DRIVE CIRCUIT

Tojo Toshiro; Takato Kenji; Yamamoto Yuzo; Ayano Mitsutoshi; Shibuya Kiyoshi


Archive | 1991

RING TRIP METHOD

Kinoshita Kazumi; Minohara Kazuyuki; Shibuya Kiyoshi

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