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Priority claimed from US06/244,454external-prioritypatent/US4415232A/en
Priority claimed from US06/244,526external-prioritypatent/US4418983A/en
Priority claimed from US06/244,527external-prioritypatent/US4477146A/en
Application filed by Amp IncfiledCriticalAmp Inc
Priority claimed from EP82301066Aexternal-prioritypatent/EP0061243B1/de
Application grantedgrantedCritical
Publication of ATE20391T1publicationCriticalpatent/ATE20391T1/de