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Application filed by Frantisek Sulc, Josef Stresnak, Hugo PozarfiledCriticalFrantisek Sulc
Priority to CS883558ApriorityCriticalpatent/CS266635B1/cs
Publication of CS355888A1publicationCriticalpatent/CS355888A1/cs
Publication of CS266635B1publicationCriticalpatent/CS266635B1/cs