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经营范围
发明名称
Improvements in or relating to film gates
摘要
申请公布号
GB475594(A)
申请公布日期
1937.11.23
申请号
GB19360019542
申请日期
1936.07.14
申请人
ELECTRICAL RESEARCH PRODUCTS INC.;CHARLES JOHN PERCIVAL SMALL;GEOFFREY ARROL GRAFTON SIMPSON
发明人
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
主权项
地址
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