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Optical disk device
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Patent number 7,539,097
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Issue date May 26, 2009
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Panasonic Corporation
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Youichi Ogura
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G11 - INFORMATION STORAGE
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Two-layer optical disk
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Patent number 5,930,225
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Issue date Jul 27, 1999
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Matsushita Electric Industrial Co., Ltd.
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Takashi Ishida
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G11 - INFORMATION STORAGE
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Two-layer optical disk
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Patent number 5,729,525
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Issue date Mar 17, 1998
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Matsushita Electric Industrial Co., Ltd.
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Takashi Ishida
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G11 - INFORMATION STORAGE
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Data detection apparatus
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Patent number 5,701,310
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Issue date Dec 23, 1997
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Matsushita Electric Industrial Co., Ltd.
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Hironori Deguchi
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G11 - INFORMATION STORAGE