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发明名称
Improvements in planks for covering hatches and similar openings
摘要
申请公布号
GB522062(A)
申请公布日期
1940.06.07
申请号
GB19390000103
申请日期
1939.01.02
申请人
HENRY EDGEWORTH FRICK
发明人
分类号
B63B19/16
主分类号
B63B19/16
代理机构
代理人
主权项
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