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发明名称
Book back protector
摘要
申请公布号
US1995128(A)
申请公布日期
1935.03.19
申请号
US19340722174
申请日期
1934.04.24
申请人
MCGUIRE DANIEL W
发明人
MCGUIRE DANIEL W.
分类号
B42D3/00
主分类号
B42D3/00
代理机构
代理人
主权项
地址
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