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Application filed by Witold Pytel, Witold Bugajski, Jan Butra, Stanislaw SiewierskifiledCriticalWitold Pytel
Priority to PL338403ApriorityCriticalpatent/PL192592B1/en
Publication of PL338403A1publicationCriticalpatent/PL338403A1/en
Publication of PL192592B1publicationCriticalpatent/PL192592B1/en