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发明名称
Propeller connection and control
摘要
申请公布号
US2186992(A)
申请公布日期
1940.01.16
申请号
US19370182338
申请日期
1937.12.29
申请人
KOCH
发明人
REINNARD JOHN B.;KOCH LYNN J.
分类号
B64C23/00
主分类号
B64C23/00
代理机构
代理人
主权项
地址
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