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Application filed by Vladimir Ing Cihak, Ervin Ing Vrabel, Mistr Adolf, Karel Oktabec, Hana RusovafiledCriticalVladimir Ing Cihak
Priority to CS848579ApriorityCriticalpatent/CS251286B1/en
Publication of CS857984A1publicationCriticalpatent/CS857984A1/en
Publication of CS251286B1publicationCriticalpatent/CS251286B1/en