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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23/00
Transmitting power from propulsion power plant to propulsive elements
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B63H23/02
with mechanical gearing
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B63H23/04
the main transmitting element, e.g. shaft, being substantially vertical
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