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经营范围
发明名称
PERSPECTIVE DRAWING APPARATUS
摘要
申请公布号
GB1537022(A)
申请公布日期
1978.12.29
申请号
GB19740039952
申请日期
1975.12.08
申请人
CROSSLEY E
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
主权项
地址
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