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Application filed by Bohumil Ing Csc Pidermann, Vaclav Ing Zacek, Slavomir Ing Krasnicky, Pokorny FrantisekfiledCriticalBohumil Ing Csc Pidermann
Priority to CS841639ApriorityCriticalpatent/CS243803B1/en
Publication of CS163984A1publicationCriticalpatent/CS163984A1/en
Publication of CS243803B1publicationCriticalpatent/CS243803B1/en