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 CS295370ApriorityCriticalpatent/CS148508B1/cs
Priority to AT851070Aprioritypatent/AT307337B/de
Priority to CH603571Aprioritypatent/CH527940A/de
Publication of CS148508B1publicationCriticalpatent/CS148508B1/cs