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发明名称
Variable pitch propeller for aircraft
摘要
申请公布号
US2023684(A)
申请公布日期
1935.12.10
申请号
US19330686671
申请日期
1933.08.25
申请人
HUBBELL HENRY S
发明人
HUBBELL HENRY S.
分类号
B64C11/34
主分类号
B64C11/34
代理机构
代理人
主权项
地址
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