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Priority to JP49056277ApriorityCriticalpatent/JPS50147937A/ja
Priority to US05/575,002prioritypatent/US4047194A/en
Priority to DE2520449Aprioritypatent/DE2520449B2/de
Priority to DE2560172Aprioritypatent/DE2560172C2/de
Publication of JPS50147937ApublicationCriticalpatent/JPS50147937A/ja