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经营范围
发明名称
Bolt making machine
摘要
申请公布号
US2020659(A)
申请公布日期
1935.11.12
申请号
US19330662719
申请日期
1933.03.25
申请人
THE NATIONAL MACHINERY COMPANY
发明人
FROST EARL R.
分类号
B21K1/44
主分类号
B21K1/44
代理机构
代理人
主权项
地址
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