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发明名称
Contact making device
摘要
申请公布号
US1940176(A)
申请公布日期
1933.12.19
申请号
US19330680627
申请日期
1933.07.15
申请人
HOWARD MARSHALL
发明人
MARSHALL HOWARD
分类号
H01H37/76
主分类号
H01H37/76
代理机构
代理人
主权项
地址
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