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发明名称
Circuit closer
摘要
申请公布号
US1804622(A)
申请公布日期
1931.05.12
申请号
US19280272678
申请日期
1928.04.25
申请人
THE A. L. SMITH IRON WORKS
发明人
JOHNSON CHESTER W.
分类号
B60Q1/14
主分类号
B60Q1/14
代理机构
代理人
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地址
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