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发明名称
Body fitting writing board
摘要
申请公布号
US1894559(A)
申请公布日期
1933.01.17
申请号
US19290353141
申请日期
1929.04.06
申请人
FISHER LEO H
发明人
FISHER LEO H.
分类号
B42F9/00
主分类号
B42F9/00
代理机构
代理人
主权项
地址
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