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发明名称
Variable liquid resistance apparatus
摘要
申请公布号
US2599806(A)
申请公布日期
1952.06.10
申请号
US19500186252
申请日期
1950.09.22
申请人
BENCHEMOUL NORBERT R
发明人
BENCHEMOUL NORBERT R.
分类号
H01C10/02
主分类号
H01C10/02
代理机构
代理人
主权项
地址
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