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经营范围
发明名称
Exhaustion device
摘要
申请公布号
US1896951(A)
申请公布日期
1933.02.07
申请号
US19270236827
申请日期
1927.11.30
申请人
HEYMAN ROSENBERG
发明人
HAHN OSKAR
分类号
C25D21/04
主分类号
C25D21/04
代理机构
代理人
主权项
地址
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