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Individual
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Individual
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Priority to ES143666ApriorityCriticalpatent/ES143666A1/en
Publication of ES143666A1publicationCriticalpatent/ES143666A1/en
ES143666A1937-04-261937-04-26
A new device of marine propellers in which the inclination or angle of attack of its blades is adjustable.
ExpiredES143666A1
(en)