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 US06/658,499external-prioritypatent/US4604346A/en
Application filed by Massachusetts Inst TechnologyfiledCriticalMassachusetts Inst Technology
Application grantedgrantedCritical
Publication of ATE56620T1publicationCriticalpatent/ATE56620T1/de