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经营范围
发明名称
COMBINED NEGATIVE HOLDER AND VIEWING DEVICE
摘要
申请公布号
GB9123764(D0)
申请公布日期
1992.01.02
申请号
GB19910023764
申请日期
1991.11.08
申请人
HUANG LAI JEN
发明人
分类号
B42F5/00;G02B27/04
主分类号
B42F5/00
代理机构
代理人
主权项
地址
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