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经营范围
发明名称
VARIABLE TRANSPARENCY VIEWING FRAMES
摘要
申请公布号
GB9321836(D0)
申请公布日期
1993.12.15
申请号
GB19930021836
申请日期
1993.10.22
申请人
GRIBBLE NICHOLAS A. D.
发明人
分类号
A61F9/02;G02C7/10
主分类号
A61F9/02
代理机构
代理人
主权项
地址
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