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Network systems
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Patent number 5,381,466
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Issue date Jan 10, 1995
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Canon Kabushiki Kaisha
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Shigeki Shibayama
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Relational algebra engine
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Patent number 4,514,826
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Issue date Apr 30, 1985
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Tokyo Shibaura Denki Kabushiki Kaisha
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Kazuhide Iwata
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G06 - COMPUTING CALCULATING COUNTING
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Data processor
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Patent number 4,314,333
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Issue date Feb 2, 1982
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Tokyo Shibaura Denki Kabushiki Kaisha
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Shigeki Shibayama
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G06 - COMPUTING CALCULATING COUNTING
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Matrix arithmetic apparatus
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Patent number 4,150,434
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Issue date Apr 17, 1979
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Tokyo Shibaura Electric Co., Ltd.
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Shigeki Shibayama
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G06 - COMPUTING CALCULATING COUNTING