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发明名称
SCREW PROPELLERS
摘要
申请公布号
IE11688(L)
申请公布日期
1930.11.06
申请号
IED11688
申请日期
1929.09.10
申请人
LEO COSTANIEVICH
发明人
分类号
(IPC1-7):B63H/00
主分类号
(IPC1-7):B63H/00
代理机构
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