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Application filed by Dusan Ing Banic, Ladislav Ing Cepel, Antonin Petrovsky, Bohumil Mikula, Marian Ing SiegfriedfiledCriticalDusan Ing Banic
Priority to CS869280ApriorityCriticalpatent/CS261073B1/en
Publication of CS928086A1publicationCriticalpatent/CS928086A1/en
Publication of CS261073B1publicationCriticalpatent/CS261073B1/en