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发明名称
Projector and gate mechanism therefor
摘要
申请公布号
US2228855(A)
申请公布日期
1941.01.14
申请号
US19400318015
申请日期
1940.02.09
申请人
REVERE CAMERA COMPANY
发明人
SPERRY PHILMORE F.
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
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