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经营范围
发明名称
Improvements in or relating to projection screens
摘要
申请公布号
GB481435(A)
申请公布日期
1938.03.07
申请号
GB19360024285
申请日期
1936.09.05
申请人
LINO TANSINI
发明人
分类号
G03B21/56
主分类号
G03B21/56
代理机构
代理人
主权项
地址
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