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发明名称
Method of manufacturing curved constructional metal members
摘要
申请公布号
US2225794(A)
申请公布日期
1940.12.24
申请号
US19370162337
申请日期
1937.09.03
申请人
KEISABURO OTA
发明人
OTA KEISABURO
分类号
C25D1/20
主分类号
C25D1/20
代理机构
代理人
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