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发明名称
MANUFACTURE OF SLIDABLE-CORE PENCILS
摘要
申请公布号
CA629894(A)
申请公布日期
1961.10.31
申请号
CAD629894
申请日期
申请人
EUGENIA LORENIAN
发明人
EUGENIA LORENIAN
分类号
主分类号
代理机构
代理人
主权项
地址
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