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Priority claimed from US763999Aexternal-prioritypatent/US3065446A/en
Priority claimed from FR805363Aexternal-prioritypatent/FR1236251A/en
Application filed by Cannon Electric CofiledCriticalCannon Electric Co
Application grantedgrantedCritical
Publication of BE592895QpublicationCriticalpatent/BE592895Q/en