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经营范围
发明名称
Threading implement
摘要
申请公布号
US2909087(A)
申请公布日期
1959.10.20
申请号
US19560616400
申请日期
1956.10.17
申请人
THE NATIONAL ACME COMPANY
发明人
POWELL DAVID R.
分类号
B21H3/04
主分类号
B21H3/04
代理机构
代理人
主权项
地址
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