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Memory management device
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Patent number 5,109,491
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Issue date Apr 28, 1992
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Hitachi, Ltd.
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Norio Nakagawa
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G06 - COMPUTING CALCULATING COUNTING
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Memory management unit
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Patent number 4,939,636
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Issue date Jul 3, 1990
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Hitachi, Ltd.
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Norio Nakagawa
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G06 - COMPUTING CALCULATING COUNTING
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Content-addressed memory
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Patent number 4,930,104
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Issue date May 29, 1990
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Hitachi, Ltd.
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Norio Nakagawa
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G11 - INFORMATION STORAGE
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Content-addressed memory
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Patent number 4,831,586
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Issue date May 16, 1989
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Hitachi, Ltd.
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Norio Nakagawa
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G11 - INFORMATION STORAGE
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Address translation unit
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Patent number 4,812,969
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Issue date Mar 14, 1989
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Hitachi, Ltd.
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Katsuaki Takagi
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G06 - COMPUTING CALCULATING COUNTING
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Signal converter
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Patent number 4,388,612
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Issue date Jun 14, 1983
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Hitachi, Ltd.
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Katsuaki Takagi
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H03 - BASIC ELECTRONIC CIRCUITRY
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Analog-to-digital converter
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Patent number 4,178,585
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Issue date Dec 11, 1979
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Hitachi, Ltd.
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Katsuaki Takagi
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H03 - BASIC ELECTRONIC CIRCUITRY