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European Convention on the International Classification of Patents for Inventions (ETS No. 017)
European Convention on the International Classification of Patents for Inventions ETS No. 017 017 Paris 1954 12 19T00:00:00 Treaty open for signature by the member States and for accession by non member States members of the International Union for the COEETS No. 017https://rm.coe.int/168006457d