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发明名称
Apparatus for operating two oars with one hand
摘要
申请公布号
US2444683(A)
申请公布日期
1948.07.06
申请号
US19470720576
申请日期
1947.01.07
申请人
SNIP JOHN G
发明人
SNIP JOHN G.
分类号
B63H16/08
主分类号
B63H16/08
代理机构
代理人
主权项
地址
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