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Application filed by И.Н. Авдеичев, Л.И. ТокаревfiledCriticalИ.Н. Авдеичев
Priority to SU360135ApriorityCriticalpatent/SU116901A1/ru
Application grantedgrantedCritical
Publication of SU116901A1publicationCriticalpatent/SU116901A1/ru