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发明名称
Grade clamp
摘要
申请公布号
US1873357(A)
申请公布日期
1932.08.23
申请号
US19310519442
申请日期
1931.03.02
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
JOHN EVERETT ST.
分类号
H02G7/08
主分类号
H02G7/08
代理机构
代理人
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地址
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