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Priority claimed from US06/658,474external-prioritypatent/US4732740A/en
Priority claimed from US06/684,009external-prioritypatent/US4615795A/en
Application filed by Stone & Webster Eng CorpfiledCriticalStone & Webster Eng Corp
Application grantedgrantedCritical
Publication of ATE49416T1publicationCriticalpatent/ATE49416T1/en