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发明名称
Projection timing device
摘要
申请公布号
US2141037(A)
申请公布日期
1938.12.20
申请号
US19350050373
申请日期
1935.11.18
申请人
DAVID FRANKLIN
发明人
FRANKLIN DAVID
分类号
G03B31/06
主分类号
G03B31/06
代理机构
代理人
主权项
地址
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