ES272003A1 - A system of mobile engravement of tips with tripartite advance (Machine-translation by Google Translate, not legally binding)
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A system of mobile engravement of tips with tripartite advance (Machine-translation by Google Translate, not legally binding)
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Gutehoffnungshutte Sterkrade AG
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Gutehoffnungshutte Sterkrade AG
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Publication of ES272003A1publicationCriticalpatent/ES272003A1/en
A system of mobile shoring of pits with tripartite advance, characterized in that the elements are each composed of three support units, movable one in relation to the other, which with their heads form a closed and elongated support area and the which always advances only one unit of support, so that during the advance the mountain is propped up by two units simultaneously. (Machine-translation by Google Translate, not legally binding)
ES0272003A1960-11-211961-11-14A system of mobile engravement of tips with tripartite advance (Machine-translation by Google Translate, not legally binding)
ExpiredES272003A1
(en)