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发明名称
Folding easel
摘要
申请公布号
US1798267(A)
申请公布日期
1931.03.31
申请号
US19300440243
申请日期
1930.03.31
申请人
MARSH HARRY V
发明人
MARSH HARRY V.
分类号
A47G1/14
主分类号
A47G1/14
代理机构
代理人
主权项
地址
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