dynamo-de-gramme-en-premier-plan dynamo-de-ragiguet-et-pile-de-grenet-font-bon-menage inauguration-du-stande-en-presence-des-personalites inauguration-devant-al-pile-de-grenet-couplee-a-la-dynamo-de-radiguet la-stare-du-musee-de-lelectrcite pierre-en-demo-sur-la-table-des-appareils-delectrotherapie vue-densemble-du-stande