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发明名称
Quotation projecting or similar apparatus
摘要
申请公布号
US1908832(A)
申请公布日期
1933.05.16
申请号
US19300434538
申请日期
1930.03.10
申请人
NEWS PROJECTION CORPORATION
发明人
EITZEN AUGUST D.
分类号
G03B21/134
主分类号
G03B21/134
代理机构
代理人
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地址
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