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Publication of ES212540A1publicationCriticalpatent/ES212540A1/en
Hydraulic control device for ship rudders of the type in which the rudder head is coupled to a piston rotatable on its axis in an annular cylinder whose curved walls are concentric with the rudder head characterized by having a semicircular piston that works in a of the cylinder ring halves approximately and is coupled with the tiller or with an arm coupled to it. (Machine-translation by Google Translate, not legally binding)
ES0212540A1952-12-101953-12-05Hydraulic device of control for riders of boats (Machine-translation by Google Translate, not legally binding)
ExpiredES212540A1
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