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jan 1, 1823 - Charles Anthony Deane and John Deane - Developed the open diving helmet and successfully used it to recover items from the seabed

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https://www.sutori.com/item/1823-charles-anthony-deane-patented-a-smoke-helmet-for-fighting-fires-which-wa

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Aquatic Science Timeline

18 Aug 2020

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jan 1, 1823

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~ 203 years ago

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