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Patent model of a water purification device for marine boilers
Public domain

Patent model of a water purification device for marine boilers

anonymous · 1864 · lead (metal); copper (metal); brass (alloy)

From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.

Subjects
scale model
Credit linePatent model of a water purification device for marine boilers. 1864. anonymous. Rijksmuseum, Amsterdam. Public domain.
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