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摘要
申请公布号
US1887160(A)
申请公布日期
1932.11.08
申请号
US19310582625
申请日期
1931.12.22
申请人
CHARLES LORBER
发明人
LORBER CHARLES
分类号
G09B11/04
主分类号
G09B11/04
代理机构
代理人
主权项
地址
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