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Priority to JP7799572UpriorityCriticalpatent/JPS4936694U/ja
Priority to DE19722248102prioritypatent/DE2248102A1/de
Priority to GB4541672Aprioritypatent/GB1389705A/en
Priority to US00293894Aprioritypatent/US3812808A/en
Publication of JPS4936694UpublicationCriticalpatent/JPS4936694U/ja