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发明名称
Shell body and method of making the same
摘要
申请公布号
US2251094(A)
申请公布日期
1941.07.29
申请号
US19400312499
申请日期
1940.01.05
申请人
WITTER CLAUDE A
发明人
WITTER CLAUDE A.
分类号
B21K1/00
主分类号
B21K1/00
代理机构
代理人
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