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Laser scanning system
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Patent number 5,497,184
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Issue date Mar 5, 1996
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Taizo Saito
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G02 - OPTICS
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Laser scanning system
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Patent number 5,247,386
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Issue date Sep 21, 1993
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Taizo Saito
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G02 - OPTICS
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Lens cap
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Patent number 4,600,278
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Issue date Jul 15, 1986
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Ashai Optical Co., Ltd.
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Taizo Saito
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G02 - OPTICS