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Application filed by Л.В. СулимfiledCriticalЛ.В. Сулим
Priority to SU33700ApriorityCriticalpatent/SU13521A1/en
Application grantedgrantedCritical
Publication of SU13521A1publicationCriticalpatent/SU13521A1/en
Тип. Гидрогр, Упр. Управ . В.-М. Сил РККА. Ленинград, здание Гл. Адмиралтейства.Type of. Hydro, Ex. Manage V.-M. Forces of the Red Army. Leningrad, building Gl. Admiralty.