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发明名称
Ball header
摘要
申请公布号
US2916952(A)
申请公布日期
1959.12.15
申请号
US19570695299
申请日期
1957.11.08
申请人
THE WATERBURY FARREL FOUNDRY & MACHINE COMPANY
发明人
SCHURMAN DONALD R.
分类号
B21K1/02
主分类号
B21K1/02
代理机构
代理人
主权项
地址
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