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ZIUDEL WILLI
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ZIUDEL WILLI
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Publication of ES207422A1publicationCriticalpatent/ES207422A1/es
Devices For Conveying Motion By Means Of Endless Flexible Members
(AREA)
Basic Packing Technique
(AREA)
Abstract
Un puntal de hierro para minas flexibles compuesto de puntal superior y puntal inferior unidos por un tensor en forma que pueda ceder a la presión caracterizado por formar el tensor una pieza autónoma que exclusivamente se sujeta de manera suelta y regulable en altura al puntal inferior y sobre el que actúa directamente el puntal superior.
ES0207422A1952-02-261953-01-26Un puntal flexible de hierro para minas
ExpiredES207422A1
(es)