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Priority claimed from US06/547,892external-prioritypatent/US4618348A/en
Priority claimed from US06/653,808external-prioritypatent/US4684372A/en
Application filed by Petroleum Fermentations IncfiledCriticalPetroleum Fermentations Inc
Application grantedgrantedCritical
Publication of ATE79787T1publicationCriticalpatent/ATE79787T1/de