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经营范围
发明名称
Copper seam
摘要
申请公布号
US2055614(A)
申请公布日期
1936.09.29
申请号
US19330693831
申请日期
1933.10.16
申请人
NATIONAL LEAD COMPANY
发明人
SHEAFF EDMUND H.
分类号
B23K35/26
主分类号
B23K35/26
代理机构
代理人
主权项
地址
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