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发明名称
DUSTPROOF DOOR DEVICE
摘要
申请公布号
JPH0495292(A)
申请公布日期
1992.03.27
申请号
JP19900212462
申请日期
1990.08.09
申请人
RICOH CO LTD
发明人
KATAGIRI SUSUMU
分类号
G11B33/02;G11B17/04;G11B17/043
主分类号
G11B33/02
代理机构
代理人
主权项
地址
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