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Application filed by Josef Ing Vostrel, Jaroslav Ing ZaluskyfiledCriticalJosef Ing Vostrel
Priority to CS814466ApriorityCriticalpatent/CS230678B1/cs
Publication of CS446681A1publicationCriticalpatent/CS446681A1/cs
Publication of CS230678B1publicationCriticalpatent/CS230678B1/cs