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Application filed by Maslonka Frantisek, An Ing Ivanko, Bocan FrantisekfiledCriticalMaslonka Frantisek
Priority to CS852556ApriorityCriticalpatent/CS245347B1/en
Publication of CS255685A1publicationCriticalpatent/CS255685A1/en
Publication of CS245347B1publicationCriticalpatent/CS245347B1/en