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Akira Hirato
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Tokyo, JP
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last 30 patents
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Patent Grant
Synchronizing system in digital communication line
Patent number
5,228,035
Issue date
Jul 13, 1993
Iwatsu Electric Co., Ltd.
Akira Hirato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Key telephone transmission system
Patent number
4,583,214
Issue date
Apr 15, 1986
Iwasaki Tsushinki Kabushiki Kaisha
Hiroyuki Miyashita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Hybrid circuit
Patent number
4,380,690
Issue date
Apr 19, 1983
Iwasaki Tsushinki Kabushiki Kaisha
Teruo Matsufuji
H04 - ELECTRIC COMMUNICATION TECHNIQUE