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Priority to JP5099874UpriorityCriticalpatent/JPS50139577U/ja
Priority to US05/572,561prioritypatent/US4007364A/en
Priority to DE19752519385prioritypatent/DE2519385A1/de
Priority to FR7513783Aprioritypatent/FR2269748B3/fr
Publication of JPS50139577UpublicationCriticalpatent/JPS50139577U/ja