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Contact lens casting mould
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Patent number 5,252,056
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Issue date Oct 12, 1993
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Ciba-Geigy Corporation
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Wilhelm Horner
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Contact lens
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Patent number 5,069,542
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Issue date Dec 3, 1991
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Titmus Eurocon Kontaktlinsen GmbH & Co. KG.
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Peter Hofer
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G02 - OPTICS
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Contact lens and compositions
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Patent number 4,463,148
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Issue date Jul 31, 1984
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Titmus Eurocon Kontaktlinsen GmbH KG & Co.
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Peter Hofer
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G02 - OPTICS