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发明名称
Apparatus for operating direct current electric arcs
摘要
申请公布号
US2215875(A)
申请公布日期
1940.09.24
申请号
US19380234972
申请日期
1938.10.14
申请人
JASCO, INCORPORATED
发明人
HEER LUDWIG;BAUMANN PAUL
分类号
H02M7/15
主分类号
H02M7/15
代理机构
代理人
主权项
地址
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