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Priority claimed from BE0/210213Aexternal-prioritypatent/BE896029A/en
Priority claimed from BE0/212111Aexternal-prioritypatent/BE898548A/en
Application filed by Edouard Georges Paul GuilminfiledCriticalEdouard Georges Paul Guilmin
Priority claimed from EP84900844Aexternal-prioritypatent/EP0139660B1/en
Application grantedgrantedCritical
Publication of ATE38073T1publicationCriticalpatent/ATE38073T1/en