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发明名称
Improvements in colour filters and projection apparatus for using such filters
摘要
申请公布号
GB629266(A)
申请公布日期
1949.09.15
申请号
GB19460023754
申请日期
1946.08.10
申请人
JAMES ELDRED SKEWES
发明人
分类号
F21V9/10
主分类号
F21V9/10
代理机构
代理人
主权项
地址
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