Working under water has always been a challenge for humans. We react rather poorly to prolonged exposure in this environment particularly without protection from external pressures. Since the early 1700’s many have worked hard to limit the exposures to pressure and extend the range of operation. Currently the Hardsuit is at the apex of this development effort. From here you view a brief history of this development. The information appears in aquaCorps Journal N8 pp26-27.

LETHBRIDGE 1715 (UK)
PHILIPS 1856 (US)
CARMAGNOLLE 1882 (France)
BOWDOIN 1915 (US)
NEUFELDT AND KUHNKE 1917 (Germany)
CAMPOS 1922 (US)
PERESS 1922 (US)
UMEL 1969 (UK)