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Priority to PL16682973ApriorityCriticalpatent/PL91435B1/pl
Priority to HU74PO00000579Aprioritypatent/HU171031B/hu
Priority to DD18225874Aprioritypatent/DD117423A5/xx
Priority to SU742080208Aprioritypatent/SU605541A3/ru
Publication of PL91435B1publicationCriticalpatent/PL91435B1/pl