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Application filed by Д. Е. Силагадзе, Л. Д. Ломтадзе и С. Д. СилагадзеfiledCriticalД. Е. Силагадзе, Л. Д. Ломтадзе и С. Д. Силагадзе
Priority to SU782592193ApriorityCriticalpatent/SU670272A1/ru
Application grantedgrantedCritical
Publication of SU670272A1publicationCriticalpatent/SU670272A1/ru