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.)
Lorenz Polygon Ausbau GmbH
Original Assignee
Lorenz Polygon Ausbau 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
Priority claimed from DE19681758395external-prioritypatent/DE1758395B1/de
Priority claimed from DE19691906632external-prioritypatent/DE1906632A1/de
Application filed by Lorenz Polygon Ausbau GmbHfiledCriticalLorenz Polygon Ausbau GmbH
Publication of FR2004966A1publicationCriticalpatent/FR2004966A1/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/34—Joints between vertical props and horizontal top bars