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经营范围
发明名称
Air cooled arc welding nozzle assembly
摘要
申请公布号
US3172992(A)
申请公布日期
1965.03.09
申请号
US19620185418
申请日期
1962.04.05
申请人
A. O. SMITH CORPORATION
发明人
KELLER ROBERT J.
分类号
B23K9/12;B23K9/28;B23K9/29
主分类号
B23K9/12
代理机构
代理人
主权项
地址
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