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Application filed by Г.М. Растатуров, Л.Л. СкардиноfiledCriticalГ.М. Растатуров
Priority to SU115440ApriorityCriticalpatent/SU34353A1/en
Application grantedgrantedCritical
Publication of SU34353A1publicationCriticalpatent/SU34353A1/en