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发明名称
Boat oar
摘要
申请公布号
US2711547(A)
申请公布日期
1955.06.28
申请号
US19510248436
申请日期
1951.09.26
申请人
BLIVEN ARTHUR E
发明人
BLIVEN ARTHUR E.
分类号
B63H16/04
主分类号
B63H16/04
代理机构
代理人
主权项
地址
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