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经营范围
发明名称
Writing instrument guide
摘要
申请公布号
US2866440(A)
申请公布日期
1958.12.30
申请号
US19550501338
申请日期
1955.04.14
申请人
GREEN WILLIAM R
发明人
GREEN WILLIAM R.
分类号
B43L15/00
主分类号
B43L15/00
代理机构
代理人
主权项
地址
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