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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83/00
Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems
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B63B83/30
for improving energy efficiency, e.g. by improving hydrodynamics or by upgrading the power plant
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