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发明名称
Improved means for automatically opening gates and the like
摘要
申请公布号
GB360644(A)
申请公布日期
1931.11.12
申请号
GB19300032201
申请日期
1930.10.27
申请人
ERNEST HENRY STAPLES
发明人
分类号
E05F13/04
主分类号
E05F13/04
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代理人
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