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发明名称
Improvements in bib-cocks
摘要
申请公布号
GB370397(A)
申请公布日期
1932.04.04
申请号
GB19310000175
申请日期
1931.01.02
申请人
HAROLD ALFRED NEWMAN
发明人
分类号
F16K31/524
主分类号
F16K31/524
代理机构
代理人
主权项
地址
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