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 CH1779071Aexternal-prioritypatent/CH566713A5/de
Priority claimed from CH1779171Aexternal-prioritypatent/CH563110A5/de
Application filedfiledCritical
Publication of HU165896BpublicationCriticalpatent/HU165896B/hu