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发明名称
Camera and projector apparatus
摘要
申请公布号
US2294622(A)
申请公布日期
1942.09.01
申请号
US19390290439
申请日期
1939.08.16
申请人
CHARLES LANGBERG;FOULKES GEORGI A
发明人
LANGBERG CHARLES;FOULKES GEORGI A.
分类号
G03B27/32
主分类号
G03B27/32
代理机构
代理人
主权项
地址
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