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经营范围
发明名称
Electrical rheostat
摘要
申请公布号
GB388002(A)
申请公布日期
1933.02.16
申请号
GB19310013929
申请日期
1931.05.11
申请人
ALEXEY WASILIEWITCH ULITOWSKY
发明人
分类号
H01C10/38
主分类号
H01C10/38
代理机构
代理人
主权项
地址
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