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Publication of FR361606ApublicationCriticalpatent/FR361606A/en
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
B63H1/16—Propellers having a shrouding ring attached to blades
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FR361606D1905-07-041905-07-04
Modifications to the propeller wings to allow them to reach high peripheral speeds with good useful effect
ExpiredFR361606A
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