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Application filed by Josef Ing Pones, Frantisek Ing Kreslik, Anna Ing JurdovafiledCriticalJosef Ing Pones
Priority to CS871854ApriorityCriticalpatent/CS260079B1/cs
Publication of CS185487A1publicationCriticalpatent/CS185487A1/cs
Publication of CS260079B1publicationCriticalpatent/CS260079B1/cs