Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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B63B
SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
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B63B22/02
specially adapted for mooring a vessel
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B63B22/021
and for transferring fluids, e.g. liquids
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B63B22/023
submerged when not in use
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