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发明名称
Rotary impeller blade
摘要
申请公布号
US2228611(A)
申请公布日期
1941.01.14
申请号
US19390273741
申请日期
1939.05.15
申请人
SANDERS HENRY E
发明人
SANDERS HENRY E.
分类号
B64C11/28;F04D29/34
主分类号
B64C11/28
代理机构
代理人
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地址
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