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Application filed by Frantisek Ing Trcka, Vaclav Ing Mach, Milan Ing KabatnikfiledCriticalFrantisek Ing Trcka
Priority to CS844542ApriorityCriticalpatent/CS242412B1/cs
Publication of CS454284A1publicationCriticalpatent/CS454284A1/cs
Publication of CS242412B1publicationCriticalpatent/CS242412B1/cs