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Ferroelectric memory device
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Patent number 5,198,994
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Issue date Mar 30, 1993
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Kabushiki Kaisha Toshiba
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Kenji Natori
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G11 - INFORMATION STORAGE
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Semiconductor device
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Patent number 4,243,997
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Issue date Jan 6, 1981
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Tokyo Shibaura Electric Co., Ltd.
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Kenji Natori
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor memory device
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Patent number 4,199,772
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Issue date Apr 22, 1980
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Tokyo Shibaura Electric Co., Ltd.
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Kenji Natori
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G11 - INFORMATION STORAGE