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Application filed by А.А. Брюшков, П.Н. Шаблыкин, П.И. ЮдинсонfiledCriticalА.А. Брюшков
Priority to SU66013ApriorityCriticalpatent/SU19997A1/ru
Application grantedgrantedCritical
Publication of SU19997A1publicationCriticalpatent/SU19997A1/ru