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 DE1906200397Dexternal-prioritypatent/DE200397C/de
Application filed by Graaff & Cie Ges Mit Beschr Ha, Hans MikoreyfiledCriticalGraaff & Cie Ges Mit Beschr Ha
Application grantedgrantedCritical
Publication of AT38973BpublicationCriticalpatent/AT38973B/de