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发明名称
Key bolt
摘要
申请公布号
US1796793(A)
申请公布日期
1931.03.17
申请号
US19270190765
申请日期
1927.05.12
申请人
KEMPF KARL F W
发明人
KEMPF KARL F. W.
分类号
B25B31/00
主分类号
B25B31/00
代理机构
代理人
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