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经营范围
发明名称
Projection apparatus
摘要
申请公布号
US2102161(A)
申请公布日期
1937.12.14
申请号
US19320628529
申请日期
1932.08.12
申请人
TRANS-LUX CORPORATION
发明人
NEWMAN DAVID F.
分类号
G03B21/134
主分类号
G03B21/134
代理机构
代理人
主权项
地址
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