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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3/00
Hulls characterised by their structure or component parts
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B63B3/02
Hulls assembled from prefabricated sub-units
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B63B3/04
with permanently-connected sub-units
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