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发明名称
METHOD AND APPARATUS FOR RESPONSE DISCRIMINATION
摘要
申请公布号
US3553852(A)
申请公布日期
1971.01.12
申请号
USD3553852
申请日期
1968.01.24
申请人
DORSETT INDUSTRIES INC.
发明人
LOYD G. DORSETT
分类号
G09B7/02;(IPC1-7):G09B7/02
主分类号
G09B7/02
代理机构
代理人
主权项
地址
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