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
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Application filedfiledCritical
Priority to DD15578871ApriorityCriticalpatent/DD96138A1/xx
Priority to CH1420271Aprioritypatent/CH562562A5/xx
Priority to DE19712151460prioritypatent/DE2151460A1/de
Priority to FR7141895Aprioritypatent/FR2141650A1/fr
Priority to SU1748777Aprioritypatent/SU562169A3/ru
Priority to HUCE000880prioritypatent/HU164877B/hu
Publication of DD96138A1publicationCriticalpatent/DD96138A1/xx