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Application filed by Vladimirov Georgij A, Pogoryanskij Anatolij PfiledCriticalVladimirov Georgij A
Priority to SU7502191737ApriorityCriticalpatent/SU580641A1/en
Application grantedgrantedCritical
Publication of SU580641A1publicationCriticalpatent/SU580641A1/en