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发明名称
Projection apparatus
摘要
申请公布号
US2147612(A)
申请公布日期
1939.02.14
申请号
US19370132051
申请日期
1937.03.20
申请人
JOHN P. CATSIGIANIS
发明人
ROSENBLOOM LOUIS
分类号
G03B21/10
主分类号
G03B21/10
代理机构
代理人
主权项
地址
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