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 CH1137371Aexternal-prioritypatent/CH556870A/xx
Application filedfiledCritical
Publication of HU164173BpublicationCriticalpatent/HU164173B/hu