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Application filed by Vostoch Ni Pi Ogneupornoj, Bogdanovichsk Ogneuporny ZfiledCriticalVostoch Ni Pi Ogneupornoj
Priority to SU864051409ApriorityCriticalpatent/SU1374684A1/ru
Application grantedgrantedCritical
Publication of SU1374684A1publicationCriticalpatent/SU1374684A1/ru