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发明名称
Drive screw
摘要
申请公布号
US1891895(A)
申请公布日期
1932.12.20
申请号
US19310506102
申请日期
1931.01.02
申请人
SHAKE PROOF LOCK WASHER CO.
发明人
NAGEL CHARLES E.
分类号
F16B19/02
主分类号
F16B19/02
代理机构
代理人
主权项
地址
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