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Priority to ES79748ApriorityCriticalpatent/ES79748A1/es
Publication of ES79748A1publicationCriticalpatent/ES79748A1/es
ES79748A1921-10-191921-10-19Un perfeccionamiento en las máquinas para la fabricación de placas de cemento y amianto u otras materias fibrosas.
ExpiredES79748A1
(es)