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发明名称
Propeller
摘要
申请公布号
US2307849(A)
申请公布日期
1943.01.12
申请号
US19380236881
申请日期
1938.10.25
申请人
MULLEN MILTON R
发明人
MULLEN MILTON R.
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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