Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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B63C
LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
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B63C9/08
Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
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B63C9/13
attachable to body member, e.g. arm, neck, head or waist
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B63C2009/133
specially adapted for being attachable to the user's head or neck, e.g. like a cap or collar
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