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发明名称
Improvements in gate, door and like spring devices
摘要
申请公布号
GB372015(A)
申请公布日期
1932.05.05
申请号
GB19310006970
申请日期
1931.03.06
申请人
WILLIAM HENRY JONES
发明人
分类号
E05F1/10
主分类号
E05F1/10
代理机构
代理人
主权项
地址
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