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1.
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Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1971.
English | 10B OMPI |
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2.
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[Place of publication not identified] : [publisher not identified], 1974.
French | 15 CH |
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3.
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Buffalo, New York : The Patent and Trademark Office Society, 1985.
French | 47 US |
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4.
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Courbevoie [France] : Institut National de la Propriété Industrielle, 1971.
French | 10A OMPI |
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