发明名称 |
PERSPECTIVE DRAWING AID |
摘要 |
|
申请公布号 |
GB8727925(D0) |
申请公布日期 |
1987.12.31 |
申请号 |
GB19870027925 |
申请日期 |
1987.11.28 |
申请人 |
ROWLEY, R B |
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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