Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 239
d Electric Light Company, which was formedfor working the patents of these two inventors. The firststage in the manufacture of an Edison-Swan incandescentlamp consists in attaching the prepared filament to itsplatinum wires, and mounting it upon a glass bridge, littlebeads of glass being formed at…
Electric industries · Electricity
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