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发明名称
PENCIL LEAD WRITING UTENSIL
摘要
申请公布号
CA432505(A)
申请公布日期
1946.01.15
申请号
CAD432505
申请日期
申请人
ARNOLD SCHWEITZER
发明人
ARNOLD SCHWEITZER
分类号
主分类号
代理机构
代理人
主权项
地址
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