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Application filed by Zdenek Ing Sluka, Rostislav Ing Kotala, Zdenek SlukafiledCriticalZdenek Ing Sluka
Priority to CS862281ApriorityCriticalpatent/CS259336B1/en
Publication of CS228186A1publicationCriticalpatent/CS228186A1/en
Publication of CS259336B1publicationCriticalpatent/CS259336B1/en