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经营范围
发明名称
Improvements in or relating to cinematograph screens
摘要
申请公布号
GB541259(A)
申请公布日期
1941.11.19
申请号
GB19400011964
申请日期
1940.07.20
申请人
EDWARD GEORGE TURNER
发明人
分类号
G03B21/58
主分类号
G03B21/58
代理机构
代理人
主权项
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