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发明名称
Method for making thin spherical shells
摘要
申请公布号
US3044166(A)
申请公布日期
1962.07.17
申请号
US19580724194
申请日期
1958.03.26
申请人
BROOKS AND PERKINS, INC.
发明人
KIRKPATRICK JAMES S.;KRAUSE FRED E.
分类号
B21D51/08
主分类号
B21D51/08
代理机构
代理人
主权项
地址
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