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Application filed by Oldrich Ing Prochazka, Jaroslav Ing PolacekfiledCriticalOldrich Ing Prochazka
Priority to CS837262ApriorityCriticalpatent/CS237193B1/cs
Publication of CS726283A1publicationCriticalpatent/CS726283A1/cs
Publication of CS237193B1publicationCriticalpatent/CS237193B1/cs