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发明名称
TECHNICAL DISPLAY MODEL
摘要
申请公布号
US3594922(A)
申请公布日期
1971.07.27
申请号
USD3594922
申请日期
1969.11.04
申请人
WILLIAM L. ELLIS
发明人
WILLIAM L. ELLIS
分类号
G09B23/12;G09B25/04;(IPC1-7):G09B25/04
主分类号
G09B23/12
代理机构
代理人
主权项
地址
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