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发明名称
TRANSMITTIVITY DETERMINING MEANS AND TRANSMITTIVITY CHANGING DEVICE AND ELECTRONIC SUNGLASSES
摘要
申请公布号
JPH04343320(A)
申请公布日期
1992.11.30
申请号
JP19910116055
申请日期
1991.05.21
申请人
SEIKO EPSON CORP
发明人
ITO AKIRA
分类号
G02C7/10;G06F9/44
主分类号
G02C7/10
代理机构
代理人
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地址
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