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Priority to JP5181674UpriorityCriticalpatent/JPS5324434Y2/ja
Priority to US05/488,922prioritypatent/US3955233A/en
Priority to GB32140/74Aprioritypatent/GB1480146A/en
Publication of JPS50140667UpublicationCriticalpatent/JPS50140667U/ja
Application grantedgrantedCritical
Publication of JPS5324434Y2publicationCriticalpatent/JPS5324434Y2/ja