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Application filed by Oldrich Ing Brinda, Oto HrabetafiledCriticalOldrich Ing Brinda
Priority to CS876886ApriorityCriticalpatent/CS265579B1/cs
Publication of CS688687A1publicationCriticalpatent/CS688687A1/cs
Publication of CS265579B1publicationCriticalpatent/CS265579B1/cs