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发明名称
Display apparatus
摘要
申请公布号
US1972416(A)
申请公布日期
1934.09.04
申请号
US19320617266
申请日期
1932.06.15
申请人
ROY FRED TOELKE
发明人
BASCOM HENRY
分类号
G09F11/00
主分类号
G09F11/00
代理机构
代理人
主权项
地址
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