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经营范围
发明名称
Improvements in or relating to damping arrangements for resisting variations in the speed of a driven member
摘要
申请公布号
GB505738(A)
申请公布日期
1939.05.16
申请号
GB19380023795
申请日期
1938.08.12
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
G11B15/50
主分类号
G11B15/50
代理机构
代理人
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地址
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