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发明名称
Isometric Sketching Device
摘要
申请公布号
GB2047904(A)
申请公布日期
1980.12.03
申请号
GB19790014788
申请日期
1979.04.27
申请人
SMITH G T
发明人
分类号
B43L13/14;(IPC1-7):B43L13/14
主分类号
B43L13/14
代理机构
代理人
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地址
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