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 DEK43246Uexternal-prioritypatent/DE1869159U/en
Priority claimed from DEK44320Uexternal-prioritypatent/DE1878586U/en
Application filed by Dynamit Nobel AgfiledCriticalDynamit Nobel Ag
Application grantedgrantedCritical
Publication of AT263320BpublicationCriticalpatent/AT263320B/en