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经营范围
发明名称
BUTT WELDING METHOD
摘要
申请公布号
JPH01166884(A)
申请公布日期
1989.06.30
申请号
JP19870325976
申请日期
1987.12.22
申请人
SUMITOMO METAL IND LTD
发明人
TAKASO MASASHI
分类号
B23K9/025;B23K9/02
主分类号
B23K9/025
代理机构
代理人
主权项
地址
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