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Application filed by Vladislav Ing Kunc, Bohuslav Soucek, Oldrich FaltynekfiledCriticalVladislav Ing Kunc
Priority to CS838555ApriorityCriticalpatent/CS239113B1/en
Publication of CS855583A1publicationCriticalpatent/CS855583A1/en
Publication of CS239113B1publicationCriticalpatent/CS239113B1/en