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发明名称
Gopyholder
摘要
申请公布号
US1990770(A)
申请公布日期
1935.02.12
申请号
US19330692244
申请日期
1933.10.05
申请人
JAMES BELL
发明人
BELL JAMES
分类号
A47B23/06
主分类号
A47B23/06
代理机构
代理人
主权项
地址
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