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Lopez Romero S A
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Lopez Romero S A
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Priority to ES370552ApriorityCriticalpatent/ES370552A1/es
Publication of ES370552A1publicationCriticalpatent/ES370552A1/es
Perfeccionamientos introducidos en valvulas capaces de fun-cionar en respuesta a un numero predeterminado de impulsos de presion en un fluido aplicado a ellas.