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Priority claimed from US07/033,073external-prioritypatent/US4777020A/en
Priority claimed from US07/112,404external-prioritypatent/US5002736A/en
Application filed by Fisher Scientific Co, Erie Scient CofiledCriticalFisher Scientific Co
Application grantedgrantedCritical
Publication of ATE76983T1publicationCriticalpatent/ATE76983T1/de