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 US06/569,684external-prioritypatent/US4496544A/en
Application filed by Univ WashingtonfiledCriticalUniv Washington
Application grantedgrantedCritical
Publication of ATE49218T1publicationCriticalpatent/ATE49218T1/de