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发明名称
Optical projection
摘要
申请公布号
US1862577(A)
申请公布日期
1932.06.14
申请号
US19260132478
申请日期
1926.08.30
申请人
SKY PROJECTOR CORPORATION
发明人
MATTHEWS HARRY GRINDELL
分类号
G09F19/18
主分类号
G09F19/18
代理机构
代理人
主权项
地址
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