ES147664A1 - Un procedimiento perfeccionado para la producción de filamentos artificiales, hilos, películas, masa y sus equivalentes".
- Google Patents
Un procedimiento perfeccionado para la producción de filamentos artificiales, hilos, películas, masa y sus equivalentes".
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ES147664A1939-12-211939-12-21Un procedimiento perfeccionado para la producción de filamentos artificiales, hilos, películas, masa y sus equivalentes".
ExpiredES147664A1
(es)