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发明名称
Propelling mechanism for boats
摘要
申请公布号
US1783331(A)
申请公布日期
1930.12.02
申请号
US19290407450
申请日期
1929.11.15
申请人
FAHRNEY EMERY H
发明人
FAHRNEY EMERY H.
分类号
B63H20/02
主分类号
B63H20/02
代理机构
代理人
主权项
地址
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