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Description of the electric furnace for melting and smelting out of metal ores: Group XI: No. 16389: Declared. 08.03.1908: Granting of the privilege 31.12.1909 / A.N. Lodygin. - [St. Petersburg]: [Lit. K. Heinrichsen], [1909]. -3041-3042 p., 1 l. heck.. -
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I. Lodygin, A.N. The people (the collection). |
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Source of electronic copy: PB
Location of the original: FIPS |
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