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发明名称
Light control mechanism for projectors
摘要
申请公布号
US1869965(A)
申请公布日期
1932.08.02
申请号
US19310551698
申请日期
1931.07.18
申请人
ROBERT HOROWITZ
发明人
HOROWITZ ROBERT
分类号
G03B21/20
主分类号
G03B21/20
代理机构
代理人
主权项
地址
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