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发明名称
METHOD OF ELECTRICALLY WELDING PIPES
摘要
申请公布号
CA312749(A)
申请公布日期
1931.06.30
申请号
CAD312749
申请日期
申请人
CHARLES M. THOMSON
发明人
CHARLES M. THOMSON
分类号
主分类号
代理机构
代理人
主权项
地址
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