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 DE1906188884Dexternal-prioritypatent/DE188884C/de
Application filed by Herforder Elek Citaets Werke BfiledCriticalHerforder Elek Citaets Werke B
Application grantedgrantedCritical
Publication of AT35521BpublicationCriticalpatent/AT35521B/en