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Priority to JP1975096289UpriorityCriticalpatent/JPS5519742Y2/ja
Publication of JPS5211742UpublicationCriticalpatent/JPS5211742U/ja
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Accouplement de roues dentées de pédaliers de bicyclettes de diamètres différents par bras intercalaires étoilé à cinq branches et moyen de fixation de l'ensemeble sur la manivelle d'entraînement