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发明名称
PERSPECTIVE DRAWING BOARD
摘要
申请公布号
GB8422450(D0)
申请公布日期
1984.10.10
申请号
GB19840022450
申请日期
1984.09.05
申请人
NEEDLE, H V
发明人
分类号
B43L13/14
主分类号
B43L13/14
代理机构
代理人
主权项
地址
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