Johannes Sibertus Kuffler (1595-1677) was a German inventor and chemist, from Cologne. He started in a successful dyeing business in Leiden, with his brother Abraham, and then moved it to Bow, London. In England he spent much effort promoting a 'secret weapon' (torpedo or submarine) for naval warfare, petioning [[Richard Cromwell. He married Catherina, daughter of Cornelius Drebbel. Wikipedia
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