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Application filed by Vlastimil Ing Hosinsky, Miloslav Ing ZelenkafiledCriticalVlastimil Ing Hosinsky
Priority to CS859219ApriorityCriticalpatent/CS251584B1/en
Publication of CS921985A1publicationCriticalpatent/CS921985A1/en
Publication of CS251584B1publicationCriticalpatent/CS251584B1/en