Back shielding Device for pipe Welding needs to back shield,申请号KR20090013098U-传众专利搜索

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发明名称	Back shielding Device for pipe Welding needs to back shield
摘要
申请公布号	KR20110003686(U)	申请公布日期	2011.04.14
申请号	KR20090013098U	申请日期	2009.10.08
申请人		发明人
分类号	B23K9/16;B23K37/00	主分类号	B23K9/16
代理机构		代理人
主权项
地址

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