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Application filed by Л. П. Коломиец, коксохимической промышленностиfiledCriticalЛ. П. Коломиец
Priority to SU1407607ApriorityCriticalpatent/SU385604A1/ru
Application grantedgrantedCritical
Publication of SU385604A1publicationCriticalpatent/SU385604A1/ru