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.)
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Application filedfiledCritical
Priority to DD17715374ApriorityCriticalpatent/DD113316A2/xx
Priority to DE19742442665prioritypatent/DE2442665A1/de
Priority to FR7439722Aprioritypatent/FR2253594B1/fr
Priority to GB5242574Aprioritypatent/GB1431638A/en
Priority to CS831574Aprioritypatent/CS175821B1/cs
Publication of DD113316A2publicationCriticalpatent/DD113316A2/xx