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Publication of SU409453A1publicationCriticalpatent/SU409453A1/ru
Application filed by С.В. БелынскийfiledCriticalС.В. Белынский
Priority to SU116782ApriorityCriticalpatent/SU31095A1/ru
Application grantedgrantedCritical
Publication of SU31095A1publicationCriticalpatent/SU31095A1/ru