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Application filed by Kratky Bohumil, Hajek Karel, Klaban Jiri, Jaromira Ing Hradecka, Marie Ing NeubauerovafiledCriticalKratky Bohumil
Priority to CS842849ApriorityCriticalpatent/CS239971B1/en
Publication of CS284984A1publicationCriticalpatent/CS284984A1/en
Publication of CS239971B1publicationCriticalpatent/CS239971B1/en