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Kerckhove Alfonso De
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Kerckhove Alfonso De
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Priority to ES15959ApriorityCriticalpatent/ES15959A3/es
Publication of ES15959A3publicationCriticalpatent/ES15959A3/es
Una nueva combinación para el movimiento de toda clase de velocípedos, por la cual pueden fácilmente cambiar la multiplicación del movimiento sin interrumpir la marcha.