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经营范围
发明名称
Drafting device
摘要
申请公布号
USRE33654(E)
申请公布日期
1991.08.06
申请号
US19900501004
申请日期
1990.03.29
申请人
发明人
分类号
B43L7/04;B43L13/14
主分类号
B43L7/04
代理机构
代理人
主权项
地址
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