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
Application filed by Norddeutsche Kabelwerke AktienfiledCriticalNorddeutsche Kabelwerke Aktien
Publication of CH218489ApublicationCriticalpatent/CH218489A/de