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Convention européenne sur la classification internationale des brevets d'invention
gen.
European Convention on the International Classification of Patents for Inventions
Convention européenne sur la classification internationale des brevets d'invention
y compris annexe amendée
1954-1961
gen.
European Convention on the International Classification of Patents for Invention
including Annex as amended
Convention européenne sur la Classification internationale des brevets d’invention
patents.
European Convention on the International Classification of Patents
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