File:Wade-Dahl-Till valve (from patent application).png
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Wade-Dahl-Till_valve_(from_patent_application).png (330 × 500 pixels, file size: 34 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:45, 3 May 2011 | ![]() | 330 × 500 (34 KB) | commons>Rewinn | Wade-Dahl-Till valve illustration, from its patent application. It is not clear than any actual such valves still exist to be photographed, so this illustration may be the only such available. It is freely viewable at http://v3.espacenet.com/textdoc?DB=EP |
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