ES292000A2 - Un procedimiento para entibar el techo en un tajo por medio de conjuntos de apuntalamiento desplazables mecanicos o hidraulico-mecanicos
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Un procedimiento para entibar el techo en un tajo por medio de conjuntos de apuntalamiento desplazables mecanicos o hidraulico-mecanicos
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GROETSCHEL KARL MARIA
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GROETSCHEL KARL MARIA
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Publication of ES292000A2publicationCriticalpatent/ES292000A2/es
Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes
(AREA)
Wind Motors
(AREA)
ES0292000A1962-11-101963-09-26Un procedimiento para entibar el techo en un tajo por medio de conjuntos de apuntalamiento desplazables mecanicos o hidraulico-mecanicos
ExpiredES292000A2
(es)