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发明名称
VISUAL/TACTILE TEACHING AID AND SYSTEM
摘要
申请公布号
CA2650313(A1)
申请公布日期
2010.07.21
申请号
CA20092650313
申请日期
2009.01.21
申请人
HOLLYWOOD-TUCK, ELIZABETH A.
发明人
HOLLYWOOD-TUCK, ELIZABETH A.
分类号
G09B19/00;G09B1/00
主分类号
G09B19/00
代理机构
代理人
主权项
地址
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