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发明名称
摘要
申请公布号
JPS646779(B2)
申请公布日期
1989.02.06
申请号
JP19800035562
申请日期
1980.03.19
申请人
HITACHI LTD
发明人
SAGAWA KOICHI;TAKAGI MASAYUKI;ISHIKAWA HIROI
分类号
A47L9/14
主分类号
A47L9/14
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