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Memory device
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Patent number 5,091,880
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Issue date Feb 25, 1992
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Olympus Optical Co., Ltd.
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Yasuo Isono
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B82 - NANO-TECHNOLOGY
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Liquid crystal eyeglass
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Patent number 4,919,520
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Issue date Apr 24, 1990
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Olympus Optical Company
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Takao Okada
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G02 - OPTICS
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Liquid crystal eyeglass
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Patent number 4,795,248
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Issue date Jan 3, 1989
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Olympus Optical Company Ltd.
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Takao Okada
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G02 - OPTICS
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