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发明名称
Improvements in hatchway constructions for cargo vessels
摘要
申请公布号
GB728879(A)
申请公布日期
1955.04.27
申请号
GB19530022188
申请日期
1953.08.12
申请人
ROBERT MACGREGOR;JOSEPH MACGREGOR
发明人
分类号
B63B25/18
主分类号
B63B25/18
代理机构
代理人
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