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发明名称
Projection system
摘要
申请公布号
US1906215(A)
申请公布日期
1933.04.25
申请号
US19300466999
申请日期
1930.07.10
申请人
COMMUNICATION PATENTS, INC.
发明人
NICOLSON ALEXANDER MCLEAN
分类号
G02B27/12
主分类号
G02B27/12
代理机构
代理人
主权项
地址
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