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发明名称
Book holder
摘要
申请公布号
US3076285(A)
申请公布日期
1963.02.05
申请号
US19610125118
申请日期
1961.07.19
申请人
SPARKMAN VIRGIL M
发明人
SPARKMAN VIRGIL M.
分类号
A47B23/04
主分类号
A47B23/04
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