Bernard HINAULT's chainring
Bernard ROSSET : berosset@wanadoo.fr
President of SAS Ogival capital of 30.000 €
Inventor chainring
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Bernard HINAULT
Technical advisor on public relations
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Grégory MARTIN : dn-up@wanadoo.fr
Study, plan and manufacture www.dn-up.com
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Geneviève MARIN : genevieve.marin78@gmail.com
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