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 DE1902140489Dexternal-prioritypatent/DE140489C/de
Application filed by Eduard Dr Lampe, Ludwig PreussfiledCriticalEduard Dr Lampe
Application grantedgrantedCritical
Publication of AT13367BpublicationCriticalpatent/AT13367B/de