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经营范围
发明名称
APPARATUS FOR AUTOMATIC CIRCUMFERENTIAL WELDING IN CARBON DIOXIDE SHIELD
摘要
申请公布号
PL113015(B1)
申请公布日期
1980.11.29
申请号
PL19780210482
申请日期
1978.10.23
申请人
发明人
分类号
B23K;B23K37/02;(IPC1-7):B23K37/02
主分类号
B23K
代理机构
代理人
主权项
地址
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