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Application filed by Josef Ing Hoskovec, Kral JanfiledCriticalJosef Ing Hoskovec
Priority to CS873001ApriorityCriticalpatent/CS261193B1/en
Publication of CS300187A1publicationCriticalpatent/CS300187A1/en
Publication of CS261193B1publicationCriticalpatent/CS261193B1/en