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Individual
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Individual
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Priority to ES228783ApriorityCriticalpatent/ES228783A1/es
Publication of ES228783A1publicationCriticalpatent/ES228783A1/es
Dispositivo acoplado a un cuadro especial de bicicleta por el cual, sin necesidad de cambio de velocidades y por medio de un graduador, se reduce el esfuerzo del ciclista.