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Priority claimed from US06/346,441external-prioritypatent/US4434889A/en
Priority claimed from US06/449,361external-prioritypatent/US4567982A/en
Application filed by Guy A FeryfiledCriticalGuy A Fery
Application grantedgrantedCritical
Publication of ATE31902T1publicationCriticalpatent/ATE31902T1/de