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 DEM53503Uexternal-prioritypatent/DE1932362U/de
Priority claimed from DEM53504Uexternal-prioritypatent/DE1932363U/de
Priority claimed from DEM55355Uexternal-prioritypatent/DE1948137U/de
Application filedfiledCritical
Publication of NL6617255ApublicationCriticalpatent/NL6617255A/xx
