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Application filed by Sergej V Krylov, Anatolij M Reshetilov, Anatolij B Troitskij, Boris G ZharkovfiledCriticalSergej V Krylov
Priority to SU772485856ApriorityCriticalpatent/SU648509A1/en
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Publication of SU648509A1publicationCriticalpatent/SU648509A1/en