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发明名称
Commutator cleanser
摘要
申请公布号
US1750990(A)
申请公布日期
1930.03.18
申请号
US19280271980
申请日期
1928.04.21
申请人
KURT BRIEL
发明人
BRIEL KURT
分类号
C11D7/60
主分类号
C11D7/60
代理机构
代理人
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