ES77303A1 - Un producto industrial consistente en papeles fotográficos negativos preparados para efectuar el grabado en hueco de reproducciones gráficas.
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Un producto industrial consistente en papeles fotográficos negativos preparados para efectuar el grabado en hueco de reproducciones gráficas.
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ES77303A1921-03-051921-03-05Un producto industrial consistente en papeles fotográficos negativos preparados para efectuar el grabado en hueco de reproducciones gráficas.
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