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Application filed by А. Л. Младенцев изобретени, В. Николаев Г., С. Арсенов Н., И. Псдкорытов Е., С. Буторов И.filedCriticalА. Л. Младенцев изобретени
Priority to SU1879797ApriorityCriticalpatent/SU432294A2/en
Application grantedgrantedCritical
Publication of SU432294A1publicationCriticalpatent/SU432294A1/en
Publication of SU432294A2publicationCriticalpatent/SU432294A2/en