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Individual
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Priority to ES0088929UpriorityCriticalpatent/ES88929U/es
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Válvula para cierre hermético incorporada a sacos y similares que se caracteriza por estar constituida mediante el doblado que forma el saco en su interior con una boca de entrada en su ángulo superior, que permite el fácil llenado o vaciado del saco, cerrándose por presión de una manera hermética cuando la presión del contenido del saco ajusta dicha válvula hacia la parte superior de aquel.
ES0088929U1961-09-121961-09-12Válvula para cierre hermético incorporada a sacos y similares
PendingES88929U
(es)