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发明名称
Contact chatter measuring device
摘要
申请公布号
US2236157(A)
申请公布日期
1941.03.25
申请号
US19390282023
申请日期
1939.06.30
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
REA WILTON T.
分类号
H04Q1/20
主分类号
H04Q1/20
代理机构
代理人
主权项
地址
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