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Bartlett Poppet Valve Gear, Patent Model
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Bartlett Poppet Valve Gear, Patent Model

Bartlett, Louis D. · 1867 · wood (overall material)

From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.

About this work

This model was submitted to the U.S. Patent Office with the application for the patent issued to Louis D. Bartlett, of Fitchburg, Massachusetts, January 15, 1867, no. 61141.

National Museum of American History’s own description
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Credit lineBartlett Poppet Valve Gear, Patent Model. 1867. Bartlett, Louis D.. National Museum of American History. CC0.
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