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Application filed by Perner Bohumil, Kvapil Jiri, Kvapil Josef, Miroslav HolasfiledCriticalPerner Bohumil
Priority to CS88442ApriorityCriticalpatent/CS265100B1/cs
Publication of CS44288A1publicationCriticalpatent/CS44288A1/cs
Publication of CS265100B1publicationCriticalpatent/CS265100B1/cs