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Application filed by Vanecek Vaclav, Jaroslav Pech, Jan FridrichfiledCriticalVanecek Vaclav
Priority to CS848765ApriorityCriticalpatent/CS242658B1/cs
Publication of CS876584A1publicationCriticalpatent/CS876584A1/cs
Publication of CS242658B1publicationCriticalpatent/CS242658B1/cs