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发明名称
OVERHEAD PROJECTOR
摘要
申请公布号
JPH11231445(A)
申请公布日期
1999.08.27
申请号
JP19980037744
申请日期
1998.02.19
申请人
RICOH CO LTD
发明人
KAGITANI KENJI
分类号
G03B21/132;G02F1/13;G03B35/18;(IPC1-7):G03B35/18
主分类号
G03B21/132
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代理人
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