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经营范围
发明名称
Improvements in or relating to apparatus for timing races or other events
摘要
申请公布号
GB420419(A)
申请公布日期
1934.11.30
申请号
GB19340016103
申请日期
1934.05.30
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
G03B15/00
主分类号
G03B15/00
代理机构
代理人
主权项
地址
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