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经营范围
发明名称
Ship's propulsion device
摘要
申请公布号
US2290697(A)
申请公布日期
1942.07.21
申请号
US19410418147
申请日期
1941.11.07
申请人
EMIL FRIES
发明人
MERTENS HENRY
分类号
B63H1/30
主分类号
B63H1/30
代理机构
代理人
主权项
地址
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