US PATENT SUBCLASS 441 / 92
.~.~.~ By compressed gas means

Current as of: June, 1999
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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}
92.~.~.~ By compressed gas means {2}
93  DF  .~.~.~.~> With puncturing means {2}
96  DF  .~.~.~.~> With control valve {1}

DEFINITION

Classification: 441/92

By compressed gas means:

(under subclass 90) Device including a self-contained source of pressurized gas for expanding the chamber.