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Individual
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Individual
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Priority to ES108400ApriorityCriticalpatent/ES108400A1/es
Publication of ES108400A1publicationCriticalpatent/ES108400A1/es
Dispositivo para mover una hélice construida a modo de aletas de pescado, en la cual describe su línea central una trayectoria cerrada y la hélice ejecuta una semirrevolución alrededor de la indicada línea central, en el tiempo en que ésta recorre por una