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发明名称
Indicating apparatus
摘要
申请公布号
US2622127(A)
申请公布日期
1952.12.16
申请号
US19480065208
申请日期
1948.12.14
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
ALSBERG DIETRICH A.;MUHLSTEFF ROBERT P.
分类号
G01R27/28
主分类号
G01R27/28
代理机构
代理人
主权项
地址
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