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发明名称
Improvements in and relating to ships' hatchways
摘要
申请公布号
GB621750(A)
申请公布日期
1949.04.19
申请号
GB19460019238
申请日期
1946.06.27
申请人
ARCHIBALD WILSON JEFFREY
发明人
分类号
B63B19/18
主分类号
B63B19/18
代理机构
代理人
主权项
地址
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