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 Wekzeug Maschinenfabrik A SchafiledCriticalWekzeug Maschinenfabrik A Scha
Publication of CH21570ApublicationCriticalpatent/CH21570A/de