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Application filed by Shpitalev Yurij P, Bugajchenko VasilijfiledCriticalShpitalev Yurij P
Priority to SU904853519ApriorityCriticalpatent/RU1782365C/ru
Application grantedgrantedCritical
Publication of RU1782365CpublicationCriticalpatent/RU1782365C/ru