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Catheter
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Patent number 4,043,345
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Issue date Aug 23, 1977
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Byk Gulden Lomberg Chemische Fabrik GmbH
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Bernhard Kramann
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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4(1H)-pyrimidinones
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Patent number 4,034,093
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Issue date Jul 5, 1977
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Byk Gulden Lomberg Chemische Fabrik GmbH
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Kurt Klemm
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Formylazapentadienenitriles
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Patent number 3,944,667
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Issue date Mar 16, 1976
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Byk Gulden Lomberg Chemische Fabrik GmbH
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Kurt Klemm
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE