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Application filed by Stanislav Ing Tesar, Karel Ing SafarfiledCriticalStanislav Ing Tesar
Priority to CS866932ApriorityCriticalpatent/CS257632B1/cs
Publication of CS693286A1publicationCriticalpatent/CS693286A1/cs
Publication of CS257632B1publicationCriticalpatent/CS257632B1/cs