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经营范围
发明名称
PASSAGE OF SHIPS THROUGH ICE
摘要
申请公布号
GB1315834(A)
申请公布日期
1973.05.02
申请号
GBD1315834
申请日期
1970.08.13
申请人
BUCKLAND J V
发明人
分类号
B63B35/08;(IPC1-7):B63B35/08
主分类号
B63B35/08
代理机构
代理人
主权项
地址
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