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发明名称
摘要
申请公布号
JPS53158199(U)
申请公布日期
1978.12.12
申请号
JP19770064280U
申请日期
1977.05.18
申请人
发明人
分类号
G02C5/00;A61F9/00;G02C11/00;H01F7/02;(IPC1-7):A61F9/00
主分类号
G02C5/00
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