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发明名称
DRAWING INSTRUMENT
摘要
申请公布号
GB1494748(A)
申请公布日期
1977.12.14
申请号
GB19740049824
申请日期
1974.11.26
申请人
TRIMAN LTD
发明人
分类号
B43L9/00;B43L9/04;(IPC1-7):B43L9/04
主分类号
B43L9/00
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代理人
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