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经营范围
发明名称
Improvements in or relating to mechanically operated pencils
摘要
申请公布号
GB569745(A)
申请公布日期
1945.06.06
申请号
GB19430019900
申请日期
1943.11.29
申请人
HENRY WEINBERGER LIMITED;GEORGE HUGO WEINBERGER
发明人
分类号
B43K21/12
主分类号
B43K21/12
代理机构
代理人
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地址
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