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发明名称
Level marking for telephone line finders
摘要
申请公布号
US2552773(A)
申请公布日期
1951.05.15
申请号
US19470756573
申请日期
1947.06.24
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
FFOLLIOTT CHARLES F.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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