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发明名称
Propeller
摘要
申请公布号
US1826021(A)
申请公布日期
1931.10.06
申请号
US19260091383
申请日期
1926.03.01
申请人
RANDALL JAMES F
发明人
RANDALL JAMES F.
分类号
B63H3/04
主分类号
B63H3/04
代理机构
代理人
主权项
地址
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