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Priority claimed from GB08957/66Aexternal-prioritypatent/GB1174061A/en
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Priority to FR103918ApriorityCriticalpatent/FR1520242A/fr
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Publication of FR1520242ApublicationCriticalpatent/FR1520242A/fr
Procédé et dispositif de production d'un signal de réglage ou analogue pour des installations à commande ou à régulation automatique et leurs diverses applications