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 CS236371ApriorityCriticalpatent/CS162073B1/cs
Priority to DE19722216041prioritypatent/DE2216041A1/de
Priority to IT2277372Aprioritypatent/IT951148B/it
Priority to GB1549372Aprioritypatent/GB1352474A/en
Publication of CS162073B1publicationCriticalpatent/CS162073B1/cs