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Multiplex transmission system
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Patent number 4,951,281
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Issue date Aug 21, 1990
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Furukawa Electric Co., Ltd.
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Makoto Muto
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Multiplex transmission system
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Patent number 4,939,725
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Issue date Jul 3, 1990
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Furukawa Electric Co., Ltd.
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Yutaka Matsuda
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Multiplex transmission system
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Patent number 4,914,654
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Issue date Apr 3, 1990
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Furukawa Electric Co., Ltd.
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Yutaka Matsuda
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H04 - ELECTRIC COMMUNICATION TECHNIQUE