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经营范围
发明名称
OPTICAL CIRCULATOR
摘要
申请公布号
JPH10239638(A)
申请公布日期
1998.09.11
申请号
JP19970345992
申请日期
1997.12.16
申请人
NEC CORP;TOKIN CORP
发明人
KATO HIROYUKI;YOKOYAMA JUN;HASHIMA MANABU
分类号
G02B27/28;G02F1/09;(IPC1-7):G02B27/28
主分类号
G02B27/28
代理机构
代理人
主权项
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