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Title: Coloured lithograph showing Halpin's patent 1891-2, thermal [Go to resource]
Description: Coloured lithograph showing Halpin's patent 1891-2, thermal storage arrangement applied to flue and water tube boilers, framed and glazed in Museum License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1902-49 Go to resource More Like this...
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