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发明名称
Ball propellers
摘要
申请公布号
US3080859(A)
申请公布日期
1963.03.12
申请号
US19610154620
申请日期
1961.11.24
申请人
TRANSOGRAM COMPANY, INC.
发明人
BENKOE ERWIN
分类号
A63B69/40
主分类号
A63B69/40
代理机构
代理人
主权项
地址
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