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Application filed by Frantisek Ing Hruska, Jaroslav Rndr Buron, Karasek OtakarfiledCriticalFrantisek Ing Hruska
Priority to CS818518ApriorityCriticalpatent/CS231012B1/cs
Publication of CS851881A1publicationCriticalpatent/CS851881A1/cs
Publication of CS231012B1publicationCriticalpatent/CS231012B1/cs