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发明名称
Display device for house numbers and the like
摘要
申请公布号
US2511411(A)
申请公布日期
1950.06.13
申请号
US19480058686
申请日期
1948.11.06
申请人
JOHN MITCHELL
发明人
MITCHELL JOHN
分类号
G08B5/00
主分类号
G08B5/00
代理机构
代理人
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