441 / | HD | BUOYS, RAFTS, AND AQUATIC DEVICES |
80 | DF | WATER RESCUE OR LIFE PROTECTING APPARATUS {8} |
88 | DF | .~ Personal flotation device {9} |
90 | DF | .~.~ With mechanical inflation means {3} |
98 | DF | .~.~.~ By gas generation from chemical reaction {2} |
100 | .~.~.~.~ With soluble or deformable element {1} | |
101 | DF | .~.~.~.~.~> With cutting, punching, or striking means |