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Application filed by Augustin Frey, Jiri Lode, Kult JaroslavfiledCriticalAugustin Frey
Priority to CS862385ApriorityCriticalpatent/CS257221B1/en
Publication of CS238586A1publicationCriticalpatent/CS238586A1/en
Publication of CS257221B1publicationCriticalpatent/CS257221B1/en