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Communication network
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Patent number 6,320,871
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Issue date Nov 20, 2001
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Matsushita Electric Industrial Co. Ltd.
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Yuji Mizuguchi
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Network system
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Patent number 6,310,885
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Issue date Oct 30, 2001
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Matsushita Electric Industrial Co., Ltd.
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Yuji Mizuguchi
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Network system
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Patent number 6,141,349
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Issue date Oct 31, 2000
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Matsushita Electric Industrial Co., Ltd.
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Toshihisa Ikeda
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H04 - ELECTRIC COMMUNICATION TECHNIQUE