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Application filed by Frantisek Ing Capek, Josef Ing JilichfiledCriticalFrantisek Ing Capek
Priority to CS852284ApriorityCriticalpatent/CS243384B1/en
Publication of CS228485A1publicationCriticalpatent/CS228485A1/en
Publication of CS243384B1publicationCriticalpatent/CS243384B1/en