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1.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1993.
German | 28 DE |
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2.
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Courbevoie [France] : Institut National de la Propriété Industrielle, 1972.
French | 10A OMPI |
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3.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | 29 DE |
|