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发明名称
Airplane and propeller
摘要
申请公布号
US1789252(A)
申请公布日期
1931.01.13
申请号
US19290350216
申请日期
1929.03.27
申请人
EDWARD O'TOOLE
发明人
O'TOOLE EDWARD
分类号
B64C11/00
主分类号
B64C11/00
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