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发明名称
VARIABLE TYPE OPTICAL ATTENUATOR
摘要
申请公布号
JPH03210504(A)
申请公布日期
1991.09.13
申请号
JP19900005849
申请日期
1990.01.12
申请人
SEIKO GIKEN:KK
发明人
TAKAHASHI MITSUO
分类号
G02B6/36;G02B6/00;G02B6/32
主分类号
G02B6/36
代理机构
代理人
主权项
地址
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