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发明名称
EDUCATIONAL DEVICE
摘要
申请公布号
CA358527(A)
申请公布日期
1936.06.16
申请号
CAD358527
申请日期
申请人
THE EDUCATIONAL LABORATORIES
发明人
JAMES YANTIS TAYLOR;CARL CHESTNUTT TAYLOR
分类号
主分类号
代理机构
代理人
主权项
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