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 DD16442872ApriorityCriticalpatent/DD97772A1/xx
Priority to DE19722258182prioritypatent/DE2258182A1/de
Priority to SU1883996Aprioritypatent/SU496615A1/ru
Priority to FR7305974Aprioritypatent/FR2193238A1/fr
Priority to CH341973Aprioritypatent/CH562509A5/xx
Publication of DD97772A1publicationCriticalpatent/DD97772A1/xx