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Priority to JP2377274UpriorityCriticalpatent/JPS50115036U/ja
Priority to US05/545,903prioritypatent/US4025178A/en
Priority to GB4820/75Aprioritypatent/GB1484103A/en
Priority to DE2506534Aprioritypatent/DE2506534C3/de
Publication of JPS50115036UpublicationCriticalpatent/JPS50115036U/ja