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 DEO7096Aexternal-prioritypatent/DE1199956B/en
Priority claimed from DE1961O0008452external-prioritypatent/DE1239832B/en
Application filed by Max OdenthalfiledCriticalMax Odenthal
Publication of BE612909ApublicationCriticalpatent/BE612909A/en