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发明名称
Welding method
摘要
申请公布号
US2191471(A)
申请公布日期
1940.02.27
申请号
US19370133357
申请日期
1937.03.27
申请人
M. W. KELLOGG CO.
发明人
HOPKINS ROBERT K.
分类号
B23K9/038
主分类号
B23K9/038
代理机构
代理人
主权项
地址
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