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Priority claimed from BE1009000Aexternal-prioritypatent/BE869446A/nl
Application filed by Emmanuel Servatius Maria SpronckfiledCriticalEmmanuel Servatius Maria Spronck
Priority claimed from EP19790200426external-prioritypatent/EP0007680B1/de
Application grantedgrantedCritical
Publication of ATE6296T1publicationCriticalpatent/ATE6296T1/de