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发明名称
Combination rudder and propulsion device
摘要
申请公布号
US2656809(A)
申请公布日期
1953.10.27
申请号
US19510233347
申请日期
1951.06.25
申请人
FRASURE JAMES W
发明人
FRASURE JAMES W.
分类号
B63H1/16
主分类号
B63H1/16
代理机构
代理人
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地址
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