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发明名称
Method of making thin sheet metal shells
摘要
申请公布号
US2312749(A)
申请公布日期
1943.03.02
申请号
US19400350480
申请日期
1940.08.03
申请人
BULLOCK GILES E
发明人
BULLOCK GILES E.
分类号
B21D22/02;B21D22/22
主分类号
B21D22/02
代理机构
代理人
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地址
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