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Signal reproducing apparatus
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Patent number 5,218,448
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Issue date Jun 8, 1993
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Matsushita Electric Industrial Co., Ltd.
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Masahiro Honjo
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Picture file system
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Patent number 5,206,931
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Issue date Apr 27, 1993
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Matsushita Electric Industrial Co., Ltd.
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Mari Kimura
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G06 - COMPUTING CALCULATING COUNTING
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DPCM Coding apparatus
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Patent number 4,137,549
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Issue date Jan 30, 1979
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Matsushita Electric Industrial Co., Ltd.
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Takeshige Ichida
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H04 - ELECTRIC COMMUNICATION TECHNIQUE