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Application filed by N.V. Philips' GloeilampenfabriekenfiledCriticalN.V. Philips' Gloeilampenfabrieken
Priority claimed from EP81200780Aexternal-prioritypatent/EP0045107B1/de
Application grantedgrantedCritical
Publication of ATE4787T1publicationCriticalpatent/ATE4787T1/de