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经营范围
发明名称
Electric switch
摘要
申请公布号
US1931827(A)
申请公布日期
1933.10.24
申请号
US19320589929
申请日期
1932.01.30
申请人
NEWMAN THOMAS J
发明人
NEWMAN THOMAS J.
分类号
G01R1/20
主分类号
G01R1/20
代理机构
代理人
主权项
地址
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