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发明名称
Propeller
摘要
申请公布号
US2199823(A)
申请公布日期
1940.05.07
申请号
US19390271270
申请日期
1939.05.02
申请人
PETER KESSERY
发明人
KESSERY PETER
分类号
B63H1/12;B64C11/16
主分类号
B63H1/12
代理机构
代理人
主权项
地址
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