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.)
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Gewerkschaft Eisenhutte Westfalia GmbH
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Gewerkschaft Eisenhutte Westfalia GmbH
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Filing date
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Application filed by Gewerkschaft Eisenhutte Westfalia GmbHfiledCriticalGewerkschaft Eisenhutte Westfalia GmbH
Priority to FR879545ApriorityCriticalpatent/FR1306524A/en
Application grantedgrantedCritical
Publication of FR1306524ApublicationCriticalpatent/FR1306524A/en
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
FR879545A1961-11-211961-11-21
Mobile support usable in mines, in particular for veins in straightening
ExpiredFR1306524A
(en)