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Priority claimed from US06/257,604external-prioritypatent/US4421250A/en
Priority claimed from US06/357,589external-prioritypatent/US4603795A/en
Priority claimed from US06/357,592external-prioritypatent/US4476998A/en
Application filed by All Flow IncfiledCriticalAll Flow Inc
Priority claimed from EP82901748Aexternal-prioritypatent/EP0078833B1/de
Application grantedgrantedCritical
Publication of ATE18655T1publicationCriticalpatent/ATE18655T1/de