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经营范围
发明名称
Improvements in or relating to writting elements for pencils
摘要
申请公布号
GB1024707(A)
申请公布日期
1966.04.06
申请号
GB19640010397
申请日期
1964.03.11
申请人
HASSENFELD BROS., INC.
发明人
分类号
C09D13/00
主分类号
C09D13/00
代理机构
代理人
主权项
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