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发明名称
Key bolt
摘要
申请公布号
US2021231(A)
申请公布日期
1935.11.19
申请号
US19330697159
申请日期
1933.11.08
申请人
KEYBOLT APPLIANCE COMPANY
发明人
EVANS LEIGH R.
分类号
F16B21/12
主分类号
F16B21/12
代理机构
代理人
主权项
地址
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