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Application filed by Peter Ing Ficzere, Frantisek Ing VicenafiledCriticalPeter Ing Ficzere
Priority to CS846144ApriorityCriticalpatent/CS248914B1/en
Publication of CS614484A1publicationCriticalpatent/CS614484A1/en
Publication of CS248914B1publicationCriticalpatent/CS248914B1/en