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发明名称
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摘要
申请公布号
US2297862(A)
申请公布日期
1942.10.06
申请号
US19390292596
申请日期
1939.08.30
申请人
BACHMANN WALTER H
发明人
BACHMANN WALTER H.
分类号
H02G3/12
主分类号
H02G3/12
代理机构
代理人
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