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经营范围
发明名称
Current converting system and apparatus
摘要
申请公布号
US1989233(A)
申请公布日期
1935.01.29
申请号
US19320592935
申请日期
1932.02.15
申请人
HUTCH-GARD CORPORATION, LTD.
发明人
HUTCHINSON FENTON F.
分类号
H02M3/40
主分类号
H02M3/40
代理机构
代理人
主权项
地址
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