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Application filed by Jan Krajewski, Kazimierz JanikfiledCriticalJan Krajewski
Priority to PL29989793ApriorityCriticalpatent/PL170764B1/en
Publication of PL299897A1publicationCriticalpatent/PL299897A1/en
Publication of PL170764B1publicationCriticalpatent/PL170764B1/en