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
Application filed by Harry H Leveen, Jeanette L RubriciusfiledCriticalHarry H Leveen
Priority claimed from PCT/US1981/001509external-prioritypatent/WO1982001646A1/en
Application grantedgrantedCritical
Publication of ATE15587T1publicationCriticalpatent/ATE15587T1/en