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发明名称
摘要
申请公布号	US2634016(A)	申请公布日期	1953.04.07
申请号	US19490111687	申请日期	1949.08.22
申请人		发明人
分类号	H01H23/04	主分类号	H01H23/04
代理机构		代理人
主权项
地址

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