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经营范围
发明名称
DRAWING BOARDS
摘要
申请公布号
CA732356(A)
申请公布日期
1966.04.19
申请号
CAD732356
申请日期
申请人
E. N. MASON AND SONS LIMITED
发明人
BERNARD J. RICHARDS;JACK BENNETT
分类号
主分类号
代理机构
代理人
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