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Application filed by Josef Ing Porkat, Vladislav Ing Cacek, Petr Ing StrnadfiledCriticalJosef Ing Porkat
Priority to CS876759ApriorityCriticalpatent/CS265575B1/cs
Publication of CS675987A1publicationCriticalpatent/CS675987A1/cs
Publication of CS265575B1publicationCriticalpatent/CS265575B1/cs