US PATENT SUBCLASS 441 / 9
.~.~.~ Gas assisted


Current as of: June, 1999
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441 /   HD   BUOYS, RAFTS, AND AQUATIC DEVICES

1  DF  BUOY {6}
6  DF  .~ Marker buoy {2}
7  DF  .~.~ Having means to release buoy upon submergence {3}
9.~.~.~ Gas assisted


DEFINITION

Classification: 441/9

Gas assisted:

(under subclass 7) Buoy wherein the release of the buoy is assisted by a gas and wherein the release or generation of the gas is initiated by sinking of the body or vessel.