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Application filed by Frantisek Banar, Frantisek Ing SkladanyfiledCriticalFrantisek Banar
Priority to CS855765ApriorityCriticalpatent/CS258612B1/cs
Publication of CS576585A1publicationCriticalpatent/CS576585A1/cs
Publication of CS258612B1publicationCriticalpatent/CS258612B1/cs