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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3/00
Propeller-blade pitch changing
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B63H3/02
actuated by control element coaxial with propeller shaft, e.g. the control element being rotary
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B63H3/04
the control element being reciprocatable
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