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Priority claimed from US06/214,623external-prioritypatent/US4348436A/en
Application filed by Koninklijke Emballage Industrie Van Leer B.V.filedCriticalKoninklijke Emballage Industrie Van Leer B.V.
Application grantedgrantedCritical
Publication of ATE11554T1publicationCriticalpatent/ATE11554T1/de