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发明名称
Changeable electric light device
摘要
申请公布号
US2041589(A)
申请公布日期
1936.05.19
申请号
US19310512271
申请日期
1931.01.30
申请人
WILLIAM SAAL
发明人
BOWERS CHARLEY
分类号
G09F13/28
主分类号
G09F13/28
代理机构
代理人
主权项
地址
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