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发明名称
Picture projecting device
摘要
申请公布号
US2135952(A)
申请公布日期
1938.11.08
申请号
US19380198949
申请日期
1938.03.30
申请人
STEPHENS CLARENCE L
发明人
STEPHENS CLARENCE L.
分类号
G03B15/08
主分类号
G03B15/08
代理机构
代理人
主权项
地址
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