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发明名称
Improvements in springs for doors, gates, and the like
摘要
申请公布号
GB346144(A)
申请公布日期
1931.04.09
申请号
GB19300009522
申请日期
1930.03.25
申请人
HERBERT ALFRED STEVENS
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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