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摘要
申请公布号
JPS53117254(U)
申请公布日期
1978.09.18
申请号
JP19770020807U
申请日期
1977.02.24
申请人
发明人
分类号
G02C7/04;G02C13/00;(IPC1-7):G02C13/00
主分类号
G02C7/04
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