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发明名称
Propeller guard
摘要
申请公布号
US2135162(A)
申请公布日期
1938.11.01
申请号
US19380185391
申请日期
1938.01.17
申请人
BENSON JOHN R
发明人
BENSON JOHN R.
分类号
B63H5/16
主分类号
B63H5/16
代理机构
代理人
主权项
地址
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