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.)
Maschinenbauanstalt Humboldt AG
Original Assignee
Maschinenbauanstalt Humboldt AG
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 Maschinenbauanstalt Humboldt AGfiledCriticalMaschinenbauanstalt Humboldt AG
Application grantedgrantedCritical
Publication of FR586664ApublicationCriticalpatent/FR586664A/fr
Perfectionnements aux revêtements et cuvelages en béton armé pour puits de mines, tunnels, galeries souterraines et ouvrages similaires ou s'y rapportant