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发明名称
Electric air-break switch
摘要
申请公布号
US1825002(A)
申请公布日期
1931.09.29
申请号
US19250029418
申请日期
1925.05.11
申请人
KRATZER HERBERT J
发明人
KRATZER HERBERT J.
分类号
H01H33/12
主分类号
H01H33/12
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代理人
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地址
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