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 CH1777265ApriorityCriticalpatent/CH450298A/fr
Publication of CH1777265A4publicationCriticalpatent/CH1777265A4/xx
Publication of CH450298ApublicationCriticalpatent/CH450298A/fr