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发明名称
Pulse testing equipment
摘要
申请公布号
US2457892(A)
申请公布日期
1949.01.04
申请号
US19430492472
申请日期
1943.06.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HIBBARD FRANK H.
分类号
H04M1/24
主分类号
H04M1/24
代理机构
代理人
主权项
地址
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