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发明名称
GAS-SHIELDING METHOD FOR MANUFACTURING WELDING TUBE
摘要
申请公布号
JPH0592279(A)
申请公布日期
1993.04.16
申请号
JP19910278608
申请日期
1991.09.30
申请人
SUMITOMO METAL IND LTD
发明人
HIKITA TOSHIHIRO
分类号
B23K13/00;B23K13/06
主分类号
B23K13/00
代理机构
代理人
主权项
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