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发明名称
Apparatus for butt welding metal sheets
摘要
申请公布号
US2272024(A)
申请公布日期
1942.02.03
申请号
US19400339982
申请日期
1940.06.11
申请人
SOCIETE ANONYME DITE: SOCIETE DES ACIERS FINS DE L'EST
发明人
SAIVES LEON
分类号
B23K9/02
主分类号
B23K9/02
代理机构
代理人
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地址
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