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Priority claimed from JP7277978Aexternal-prioritypatent/JPS5816423B2/ja
Priority claimed from JP14077778Uexternal-prioritypatent/JPS5814754Y2/ja
Application filed by Bridgestone Tire Co LtdfiledCriticalBridgestone Tire Co Ltd
Publication of IT7921874V0publicationCriticalpatent/IT7921874V0/it