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Priority to ES0020997UpriorityCriticalpatent/ES20997Y/es
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Publication of ES20997YpublicationCriticalpatent/ES20997Y/es
Cierre automático para tubos envase de plomo o estaño, caracterizado por que consiste en que en al cuello del tubo se dispone una pieza perforada que actúa de regulador, sobre la que se apoya, solicitada por un resorte helicoidal, una valvulita que normalmente cierra la salida del tubo central de dicha pieza.
ES0020997U1949-09-281949-09-28Cierre automático para tubo-envase de plomo o estaño.
ExpiredES20997Y
(es)