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发明名称
Propeller
摘要
申请公布号
US2116055(A)
申请公布日期
1938.05.03
申请号
US19360059644
申请日期
1936.01.17
申请人
JOHN WEICHWALD
发明人
WEICHWALD JOHN
分类号
B64C11/16
主分类号
B64C11/16
代理机构
代理人
主权项
地址
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