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发明名称
BOARD AID TO POSITIVE GUIDED DRAWING AND SKETCHING IN PERSPECTIVE
摘要
申请公布号
GB2175543(B)
申请公布日期
1988.09.28
申请号
GB19860012570
申请日期
1986.05.22
申请人
RAYMOND BASIL * SWIFT
发明人
RAYMOND BASIL * SWIFT
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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