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发明名称
Trolling plate
摘要
申请公布号
US2256898(A)
申请公布日期
1941.09.23
申请号
US19390267046
申请日期
1939.04.10
申请人
EHMKE GUSTAV A W
发明人
EHMKE GUSTAV A. W.
分类号
B63H25/50
主分类号
B63H25/50
代理机构
代理人
主权项
地址
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