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发明名称
Drafting means
摘要
申请公布号
US2194889(A)
申请公布日期
1940.03.26
申请号
US19380186185
申请日期
1938.01.21
申请人
DE LISLE HAROLD L
发明人
LISLE HAROLD L. DE
分类号
A47B27/00;B43L13/04
主分类号
A47B27/00
代理机构
代理人
主权项
地址
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