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经营范围
发明名称
METAL DRAWING METHOD AND APPARATUS
摘要
申请公布号
US3605476(A)
申请公布日期
1971.09.20
申请号
USD3605476
申请日期
1969.02.17
申请人
BATTELLE DEVELOPMENT CORP.
发明人
JOHN W. HINSHAW
分类号
B21C1/00;B21C3/02;(IPC1-7):B21C1/00;B21C3/00
主分类号
B21C1/00
代理机构
代理人
主权项
地址
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