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B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H1/00—Propulsive elements directly acting on water
B63H1/02—Propulsive elements directly acting on water of rotary type
B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
B63H1/14—Propellers
B63H1/26—Blades
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C9/00—Alloys based on copper
C22C9/04—Alloys based on copper with zinc as the next major constituent
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Ocean & Marine Engineering
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FR418139A1910-01-041910-07-11Perfectionnements apportés aux propulseurs pour bateaux à marche rapide et autres pièces sujettes à l'érosion
ExpiredFR418139A
(fr)