Napoleon Guerin was an American inventor who obtained a U.S. patent for the first life preserver made of cork on November 16, 1841. It was constructed in jacket form, with two layers of material between which the cork could be inserted.
Napoleon Guerin was an American inventor who obtained a U.S. patent for the first life preserver made of cork on November 16, 1841. It was constructed in jacket form, with two layers of material between which the cork could be inserted.
Source: Wikipedia "Napoleon Guerin" · CC BY-SA 4.0
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