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Magnetooptical recording medium
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Patent number 5,738,950
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Issue date Apr 14, 1998
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Canon Kabushiki Kaisha
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Hiroyoshi Kishi
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Magneto-optical recording medium
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Patent number 4,923,765
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Issue date May 8, 1990
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Hitachi, Ltd.
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Shinji Takayama
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magneto-optical recording element
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Patent number 4,680,742
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Issue date Jul 14, 1987
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Kyocera Corporation
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Takashi Yamada
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magnetooptical recording medium
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Patent number 4,670,353
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Issue date Jun 2, 1987
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Canon Kabushiki Kaisha
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Yoshifumi Sakurai
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magneto-optical device
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Patent number 4,650,290
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Issue date Mar 17, 1987
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U.S. Philips Corporation
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Pieter G. van Engen
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G02 - OPTICS
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