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Priority claimed from US804285Aexternal-prioritypatent/US2943240A/en
Priority claimed from FR828014Aexternal-prioritypatent/FR1260310A/fr
Application filed by Kaiser Aluminium Chem CorpfiledCriticalKaiser Aluminium Chem Corp
Application grantedgrantedCritical
Publication of BE611767QpublicationCriticalpatent/BE611767Q/fr