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发明名称
Mechanised display panels
摘要
申请公布号
US3239740(A)
申请公布日期
1966.03.08
申请号
US19620240968
申请日期
1962.11.29
申请人
COMMUNICATIONS PATENTS LIMITED
发明人
LOCKE JOHN DAVID IVOR
分类号
G08B5/24;G09B25/02
主分类号
G08B5/24
代理机构
代理人
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地址
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