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发明名称
Propeller
摘要
申请公布号
US2258699(A)
申请公布日期
1941.10.14
申请号
US19400318145
申请日期
1940.02.09
申请人
DOMINGO CALVO-MACKENNA
发明人
CALVO-MACKENNA DOMINGO
分类号
B63H1/08
主分类号
B63H1/08
代理机构
代理人
主权项
地址
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