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发明名称
Propeller attachment for boats
摘要
申请公布号
US1802351(A)
申请公布日期
1931.04.28
申请号
US19300443790
申请日期
1930.04.12
申请人
GUSTAV NEUMANN
发明人
NEUMANN GUSTAV
分类号
B63H20/10;B63H20/14
主分类号
B63H20/10
代理机构
代理人
主权项
地址
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