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发明名称
Exposure shutter for motion picture projecting apparatus
摘要
申请公布号
US1911134(A)
申请公布日期
1933.05.23
申请号
US19280260347
申请日期
1928.03.09
申请人
ENTERPRISE OPTICAL MFG. CO.
发明人
WIENKE EMIL J.
分类号
G03B9/10
主分类号
G03B9/10
代理机构
代理人
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地址
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