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Application filed by Frantisek Sokolovsky, Ladislav Ing PitrafiledCriticalFrantisek Sokolovsky
Priority to CS841413ApriorityCriticalpatent/CS254408B1/en
Publication of CS141384A1publicationCriticalpatent/CS141384A1/en
Publication of CS254408B1publicationCriticalpatent/CS254408B1/en