Timeline Of Diving Technology
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1820: Paul Lemaire d’Augerville (a Parisian dentist) invented and made a diving apparatus with a copper backpack cylinder, and with a counter-lung to save air, and with an inflatable lifejacket connected. It was used down to 15 or 20 meters for up to an hour in salvage work. He started a successful salvage company .
1825: William H. James designed a self contained diving suit that had compressed air in an iron container worn around the waist.
1827: Beaudouin in France developed a diving helmet fed from an air cylinder pressurized to 80 to 100 bars. The French Navy was interested, but nothing came of this.
1829: Charles Anthony Deane and John Deane of Whitstable in Kent in England design the first air-pumped diving helmet for use with a diving suit. It is said that the idea started
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