Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/244,454external-prioritypatent/US4415232A/en
Priority claimed from US06/244,527external-prioritypatent/US4477146A/en
Priority claimed from US06/244,526external-prioritypatent/US4418983A/en
Application filed by Amp IncfiledCriticalAmp Inc
Priority claimed from EP82301066Aexternal-prioritypatent/EP0061243B1/de
Application grantedgrantedCritical
Publication of ATE20391T1publicationCriticalpatent/ATE20391T1/de