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发明名称
Book lock
摘要
申请公布号
US2506846(A)
申请公布日期
1950.05.09
申请号
US19480029817
申请日期
1948.05.28
申请人
FRANK TEASDALE
发明人
TEASDALE FRANK
分类号
B42F13/00;E05B65/52
主分类号
B42F13/00
代理机构
代理人
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地址
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