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 DE1907212418Dexternal-prioritypatent/DE212418C/de
Application filed by Coeln Muesener Bergwerks ActiefiledCriticalCoeln Muesener Bergwerks Actie
Priority to AT50025DpriorityCriticalpatent/AT50025B/de
Application grantedgrantedCritical
Publication of AT50025BpublicationCriticalpatent/AT50025B/de