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发明名称
Film projection apparatus
摘要
申请公布号
US2415281(A)
申请公布日期
1947.02.04
申请号
US19450633586
申请日期
1945.12.08
申请人
AMERICAN OPTICAL COMPANY
发明人
GRADISAR ALBIN A.;SCHENK GEORGE F.
分类号
G03B21/00
主分类号
G03B21/00
代理机构
代理人
主权项
地址
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