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发明名称
Welding core for tubes
摘要
申请公布号
US3411688(A)
申请公布日期
1968.11.19
申请号
US19670610693
申请日期
1967.01.20
申请人
NAVY USA
发明人
RITTER JULIUS C.
分类号
B23K9/028;B23K35/02
主分类号
B23K9/028
代理机构
代理人
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地址
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