Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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B63H
MARINE PROPULSION OR STEERING
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5/00
Arrangements on vessels of propulsion elements directly acting on water
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B63H5/14
characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
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B63H5/15
Nozzles, e.g. Kort-type
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