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Priority claimed from US07/054,936external-prioritypatent/US4829827A/en
Priority claimed from US07/185,856external-prioritypatent/US4858471A/en
Application filed by Dynisco IncfiledCriticalDynisco Inc
Priority claimed from EP88107866Aexternal-prioritypatent/EP0292839B1/de
Application grantedgrantedCritical
Publication of ATE94641T1publicationCriticalpatent/ATE94641T1/de