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Priority claimed from US07/210,368external-prioritypatent/US4887446A/en
Priority claimed from US07/365,202external-prioritypatent/US4969349A/en
Priority claimed from US07/365,201external-prioritypatent/US5003808A/en
Application filed by John H MaherfiledCriticalJohn H Maher
Priority claimed from PCT/US1989/002771external-prioritypatent/WO1990000099A1/en
Application grantedgrantedCritical
Publication of ATE93171T1publicationCriticalpatent/ATE93171T1/en