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Individual
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Individual
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Priority to ES161524ApriorityCriticalpatent/ES161524A1/es
Publication of ES161524A1publicationCriticalpatent/ES161524A1/es
ES161524A1943-05-171943-05-17Procedimiento para la obtención de hilados de seda artificial y lana de celulosa, partiendo de viscosa.
ExpiredES161524A1
(es)
Procedimiento para la fabricación de productos sustitutivos de los derivados del petróleo, partiendo de la madera y otras materias celulósicas cualesquiera