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 US06/616,331external-prioritypatent/US4553955A/en
Application filed by Beckman Instruments IncfiledCriticalBeckman Instruments Inc
Application grantedgrantedCritical
Publication of ATE36815T1publicationCriticalpatent/ATE36815T1/en