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发明名称
Spring nut locking device for rail joints
摘要
申请公布号
US1805413(A)
申请公布日期
1931.05.12
申请号
US19290394065
申请日期
1929.09.20
申请人
THEODORE F. VON DORN
发明人
NORWOOD HARRY G.
分类号
F16B39/24
主分类号
F16B39/24
代理机构
代理人
主权项
地址
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