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Application filed by Milan Ing Vitvar, Ivan Urban, Svajgl Oldrich, Huml MiroslavfiledCriticalMilan Ing Vitvar
Priority to CS839780ApriorityCriticalpatent/CS239142B1/cs
Publication of CS978083A1publicationCriticalpatent/CS978083A1/cs
Publication of CS239142B1publicationCriticalpatent/CS239142B1/cs