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经营范围
发明名称
Collapsible lectern
摘要
申请公布号
US2786299(A)
申请公布日期
1957.03.26
申请号
US19560581647
申请日期
1956.04.30
申请人
COSGROVE FRANCIS N
发明人
COSGROVE FRANCIS N.
分类号
A47B23/04
主分类号
A47B23/04
代理机构
代理人
主权项
地址
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