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Application filed by Antonin Petrovsky, Bohumil MikulafiledCriticalAntonin Petrovsky
Priority to CS831160ApriorityCriticalpatent/CS231947B1/en
Publication of CS116083A1publicationCriticalpatent/CS116083A1/en
Publication of CS231947B1publicationCriticalpatent/CS231947B1/en