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发明名称
Improvements relating to hatch covers for ships' hatches
摘要
申请公布号
GB352870(A)
申请公布日期
1931.07.16
申请号
GB19300034914
申请日期
1930.11.20
申请人
ARCHIBALD SCOTT YOUNGER
发明人
分类号
B63B19/16
主分类号
B63B19/16
代理机构
代理人
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