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经营范围
发明名称
Improvements in and relating to elastic force and equipoising mechanisms
摘要
申请公布号
GB489547(A)
申请公布日期
1938.07.26
申请号
GB19370002236
申请日期
1937.01.26
申请人
GEORGE CARWARDINE
发明人
分类号
F21V21/24
主分类号
F21V21/24
代理机构
代理人
主权项
地址
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