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Priority claimed from FR8303235Aexternal-prioritypatent/FR2541573B1/fr
Priority claimed from FR8315398Aexternal-prioritypatent/FR2552317B2/fr
Application filed by Verrerie & CristalleriefiledCriticalVerrerie & Cristallerie
Priority claimed from EP84400364Aexternal-prioritypatent/EP0118353B1/de
Application grantedgrantedCritical
Publication of ATE25576T1publicationCriticalpatent/ATE25576T1/de