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Application filed by Frantisek Machala, Josef Rndr CihakfiledCriticalFrantisek Machala
Priority to CS866949ApriorityCriticalpatent/CS256798B1/cs
Publication of CS694986A1publicationCriticalpatent/CS694986A1/cs
Publication of CS256798B1publicationCriticalpatent/CS256798B1/cs