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发明名称
PERFECTIONNEMENTS RELATIFS A DES HELICES OU ANALOGUES AYANT DES PALES A PAS REGLABLE.
摘要
申请公布号
BE566884(A1)
申请公布日期
1960.05.14
申请号
BE19580566884
申请日期
1958.04.17
申请人
HATCHER E C
发明人
分类号
B63H3/08
主分类号
B63H3/08
代理机构
代理人
主权项
地址
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