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发明名称
Rock conveyer ship
摘要
申请公布号
US2532249(A)
申请公布日期
1950.11.28
申请号
US19470734699
申请日期
1947.03.14
申请人
MARY WARD
发明人
WARD MONTAGUE R.
分类号
B63B27/22;E02B3/12
主分类号
B63B27/22
代理机构
代理人
主权项
地址
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