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经营范围
发明名称
Improvements in or relating to slide projectors
摘要
申请公布号
GB972947(A)
申请公布日期
1964.10.21
申请号
GB19630012408
申请日期
1963.03.28
申请人
SAWYER'S INC.
发明人
分类号
G03B23/04
主分类号
G03B23/04
代理机构
代理人
主权项
地址
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