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发明名称
Variable-pitch airscrew
摘要
申请公布号
US2609057(A)
申请公布日期
1952.09.02
申请号
US19460644746
申请日期
1946.02.01
申请人
THE DE HAVILLAND AIRCRAFT COMPANY LIMITED
发明人
CROWHURST JAMES ARTHUR
分类号
B64C11/42
主分类号
B64C11/42
代理机构
代理人
主权项
地址
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