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Publication of SU372799A1publicationCriticalpatent/SU372799A1/en
Application filed by А.Г. МашковичfiledCriticalА.Г. Машкович
Priority to SU51348ApriorityCriticalpatent/SU16513A1/en
Application grantedgrantedCritical
Publication of SU16513A1publicationCriticalpatent/SU16513A1/en