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经营范围
发明名称
Propeller
摘要
申请公布号
US1894081(A)
申请公布日期
1933.01.10
申请号
US19300462492
申请日期
1930.06.20
申请人
BROOKS CHARLES E
发明人
BROOKS CHARLES E.
分类号
B64C11/00
主分类号
B64C11/00
代理机构
代理人
主权项
地址
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