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发明名称
Letter safe
摘要
申请公布号
US2650150(A)
申请公布日期
1953.08.25
申请号
US19510204027
申请日期
1951.01.02
申请人
SMITH OSCAR H;SMITH ETHEL M
发明人
SMITH OSCAR H.;SMITH ETHEL M.
分类号
A47B88/02
主分类号
A47B88/02
代理机构
代理人
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地址
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