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  • curprev 23:42, 10 January 2022‎ LTA talk contribs‎ 248 bytes +248‎ Patent GB-1872-411 [https://books.google.com/books?id=DUlkGeStZIgC&hl=fr&pg=RA30-PP7#v=onepage&q&f=true Source] (Google Books scan titled "English Patents of Inventions, Specifications: 1872, 368 - 418", provided by Deutsches Museum.
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