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发明名称
Illuminated dial
摘要
申请公布号
US1994950(A)
申请公布日期
1935.03.19
申请号
US19340717200
申请日期
1934.03.24
申请人
IDA MAE JOHNSON
发明人
HOFFRITZ CHARLES WILLIAM
分类号
G04B19/30
主分类号
G04B19/30
代理机构
代理人
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地址
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