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发明名称
Bossoirs pour drague
摘要
申请公布号
FR1376752(A)
申请公布日期
1964.10.31
申请号
FR19630948166
申请日期
1963.09.20
申请人
NATIONAL BULK CARRIERS, INC.
发明人
分类号
E02F3/90
主分类号
E02F3/90
代理机构
代理人
主权项
地址
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