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发明名称
OVER HEAD PROJECTOR
摘要
申请公布号
JPH05281610(A)
申请公布日期
1993.10.29
申请号
JP19920079674
申请日期
1992.04.01
申请人
发明人
分类号
G03B21/132;(IPC1-7):G03B21/132
主分类号
G03B21/132
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