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发明名称
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摘要
申请公布号
US1839080(A)
申请公布日期
1931.12.29
申请号
US19300494235
申请日期
1930.11.08
申请人
ERNST BLOMQUIST
发明人
BLOMQUIST ERNST
分类号
H01H3/00
主分类号
H01H3/00
代理机构
代理人
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