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发明名称
Electrode holder
摘要
申请公布号
US2244286(A)
申请公布日期
1941.06.03
申请号
US19390293271
申请日期
1939.09.02
申请人
CALLAHAN OSCAR L
发明人
CALLAHAN OSCAR L.
分类号
B23K9/28
主分类号
B23K9/28
代理机构
代理人
主权项
地址
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