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发明名称
Aircraft
摘要
申请公布号
US1820919(A)
申请公布日期
1931.09.01
申请号
US19300457907
申请日期
1930.05.31
申请人
MASSEY HENRY P
发明人
MASSEY HENRY P.
分类号
B64C23/00
主分类号
B64C23/00
代理机构
代理人
主权项
地址
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