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Application filed by Bohumil Ing Malek, Jiri Machacek, Milan Ing Snydr, Jaroslav Ing RajglfiledCriticalBohumil Ing Malek
Priority to CS843611ApriorityCriticalpatent/CS251325B1/en
Publication of CS361184A1publicationCriticalpatent/CS361184A1/en
Publication of CS251325B1publicationCriticalpatent/CS251325B1/en