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发明名称
DRAWING DESKS
摘要
申请公布号
CA646084(A)
申请公布日期
1962.08.07
申请号
CAD646084
申请日期
申请人
HELMUT K. F. MARTIN
发明人
HELMUT K. F. MARTIN
分类号
主分类号
代理机构
代理人
主权项
地址
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