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Application filed by Д. И. Чарный, П. А. Булгаков Оренбургский завод РадиаторfiledCriticalД. И. Чарный
Priority to SU1864117ApriorityCriticalpatent/SU453278A2/ru
Application grantedgrantedCritical
Publication of SU453278A1publicationCriticalpatent/SU453278A1/ru
Publication of SU453278A2publicationCriticalpatent/SU453278A2/ru