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发明名称
Ellipsograph
摘要
申请公布号
US3137945(A)
申请公布日期
1964.06.23
申请号
US19630259330
申请日期
1963.02.18
申请人
DA SILVA FERNANDO DIAS
发明人
SILVA FERNANDO DIAS DA
分类号
B43L11/04
主分类号
B43L11/04
代理机构
代理人
主权项
地址
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