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Application filed by Харьковский инженерно-строительный институтfiledCriticalХарьковский инженерно-строительный институт
Priority to SU904900705ApriorityCriticalpatent/RU1838074C/ru
Application grantedgrantedCritical
Publication of RU1838074CpublicationCriticalpatent/RU1838074C/ru