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Application filed by Н.И. Вишневский, П.Н. МоисеевfiledCriticalН.И. Вишневский
Priority to SU49355ApriorityCriticalpatent/SU16223A1/en
Application grantedgrantedCritical
Publication of SU16223A1publicationCriticalpatent/SU16223A1/en