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Projection system
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Patent number 6,583,940
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Issue date Jun 24, 2003
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Minolta Co., Ltd.
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Jun Nishikawa
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Projection optical apparatus
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Patent number 6,382,799
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Issue date May 7, 2002
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Minolta Co., Ltd.
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Jun Nishikawa
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Zoom lens system
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Patent number 5,914,820
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Issue date Jun 22, 1999
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Minolta Co., Ltd.
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Shunta Takimoto
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G02 - OPTICS
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Imaging optical system
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Patent number 5,716,118
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Issue date Feb 10, 1998
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Minolta Co., Ltd.
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Akira Sato
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G02 - OPTICS
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Projecting optical device
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Patent number 5,683,161
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Issue date Nov 4, 1997
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Minolta Co., Ltd.
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Takatoshi Ishikawa
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Zoom lens system
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Patent number 5,543,970
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Issue date Aug 6, 1996
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Minolta Camera Kabushiki Kaisha
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Kazuyoshi Hata
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G02 - OPTICS
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Zoom lens system
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Patent number 5,268,793
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Issue date Dec 7, 1993
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Minolta Camera Kabushiki Kaisha
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Manami Saka
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G02 - OPTICS