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 CH359870Aexternal-prioritypatent/CH533639A/de
Priority claimed from CH1159370Aexternal-prioritypatent/CH531000A/de
Application filedfiledCritical
Publication of HU162868BpublicationCriticalpatent/HU162868B/hu