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发明名称
Process for welding pipe joints
摘要
申请公布号
US2173109(A)
申请公布日期
1939.09.19
申请号
US19380189326
申请日期
1938.02.08
申请人
HAMBLIN CLYDE M
发明人
HAMBLIN CLYDE M.
分类号
B23K9/035
主分类号
B23K9/035
代理机构
代理人
主权项
地址
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