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Application filed by Vladimir Ing Zierhut, Lubos Ing Fejk, Frantisek ZdarskyfiledCriticalVladimir Ing Zierhut
Priority to CS8710061ApriorityCriticalpatent/CS270014B1/cs
Publication of CS1006187A1publicationCriticalpatent/CS1006187A1/cs
Publication of CS270014B1publicationCriticalpatent/CS270014B1/cs