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 filedfiledCritical
Priority to CH1552765ApriorityCriticalpatent/CH448905A/de
Publication of CH1552765A4publicationCriticalpatent/CH1552765A4/xx
Publication of CH448905ApublicationCriticalpatent/CH448905A/de