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经营范围
发明名称
Circuit maker and breaker
摘要
申请公布号
US1950151(A)
申请公布日期
1934.03.06
申请号
US19330684706
申请日期
1933.08.11
申请人
GENERAL TUNGSTEN MANUFACTURING CO., INC.
发明人
OBERDICK ERVIN O.;RINGWALD CLARENCE
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