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发明名称
Method of and apparatus for projecting pictures
摘要
申请公布号
US2018690(A)
申请公布日期
1935.10.29
申请号
US19330670163
申请日期
1933.05.09
申请人
TREMPALLA LEO C
发明人
TREMPALLA LEO C.
分类号
G03B33/00
主分类号
G03B33/00
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