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经营范围
发明名称
BACKING DEVICE FOR ONE SIDE WELDING OF PIPES
摘要
申请公布号
JPS5263133(A)
申请公布日期
1977.05.25
申请号
JP19750125631
申请日期
1975.10.17
申请人
KOBE STEEL LTD
发明人
YABUKAME SHIROU;WATANABE HIDENORI
分类号
B23K37/06
主分类号
B23K37/06
代理机构
代理人
主权项
地址
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