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Experimental Incandescent Lamp
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Experimental incandescent lamp, U.S. Patent # 317676. The radiator consists of two corrugated copper ribbons.
National Museum of American History’s own descriptionCredit lineExperimental Incandescent Lamp. ca 1885. Sawyer, William E.. National Museum of American History. CC0.