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Information recording medium
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Patent number 5,652,037
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Issue date Jul 29, 1997
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Kabushiki Kaisha Toshiba
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Hideki Ohkawa
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G11 - INFORMATION STORAGE
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Information recording medium
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Patent number 5,580,632
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Issue date Dec 3, 1996
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Kabushiki Kaisha Toshiba
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Hideki Ohkawa
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G11 - INFORMATION STORAGE
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Information storage medium
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Patent number 5,013,635
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Issue date May 7, 1991
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Kabushiki Kaisha Toshiba
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Hideki Ohkawa
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G11 - INFORMATION STORAGE
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Information storage medium
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Patent number 4,985,349
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Issue date Jan 15, 1991
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Kabushiki Kaisha Toshiba
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Kideki Ohkawa
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G11 - INFORMATION STORAGE