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Application filed by Broz Vaclav, Oldrich Kubat, Milos OpocenskyfiledCriticalBroz Vaclav
Priority to CS832652ApriorityCriticalpatent/CS239256B1/en
Publication of CS265283A1publicationCriticalpatent/CS265283A1/en
Publication of CS239256B1publicationCriticalpatent/CS239256B1/en