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Publication date
Application filed by Н.В. ВологодскийfiledCriticalН.В. Вологодский
Priority to SU3837388/06ApriorityCriticalpatent/RU1285840C/en
Priority claimed from SU3837388/06Aexternal-prioritypatent/RU1285840C/en
Application grantedgrantedCritical
Publication of SU1285840A1publicationCriticalpatent/SU1285840A1/en
Publication of RU1285840CpublicationCriticalpatent/RU1285840C/en