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发明名称
Concentrator
摘要
申请公布号
US1980490(A)
申请公布日期
1934.11.13
申请号
US19290404630
申请日期
1929.11.04
申请人
LIDE MARTIN J
发明人
LIDE MARTIN J.
分类号
B03B4/00
主分类号
B03B4/00
代理机构
代理人
主权项
地址
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