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发明名称
Phase and amplitude testing apparatus
摘要
申请公布号
US2806185(A)
申请公布日期
1957.09.10
申请号
US19550499478
申请日期
1955.04.05
申请人
STAATSBEDRIJF DER POSTERIJEN TELEGRAFIE EN TELEFONIE
发明人
OBERMAN ROELOF M. M.
分类号
G01R25/00
主分类号
G01R25/00
代理机构
代理人
主权项
地址
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