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发明名称
Folding lap board
摘要
申请公布号
US1911823(A)
申请公布日期
1933.05.30
申请号
US19310512073
申请日期
1931.01.29
申请人
HENRY HARRISON
发明人
HARRISON HENRY
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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