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B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
B63H25/44—Steering or slowing-down by extensible flaps or the like
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FR803416D1935-08-021936-03-13Dispositif pour gouverner les navires
ExpiredFR803416A
(fr)