Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbHfiledCriticalGewerkschaft Eisenhutte Westfalia GmbH
Priority to ES0419621ApriorityCriticalpatent/ES419621A1/es
Publication of ES419621A1publicationCriticalpatent/ES419621A1/es
ES0419621A1973-10-131973-10-13Perfeccionamientos en dispositivos de avance frontal por escudo para la construccion de espacios huecos subterraneos
ExpiredES419621A1
(es)
Perfeccionamientos introducidos en entramados desplazables de apuntalado para la excavacion yno el encofrado de la en- tibacion definitiva de galerias, tuneles, pozos u otras construcciones alargadas similares.