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发明名称
Underground conduit
摘要
申请公布号
US1968447(A)
申请公布日期
1934.07.31
申请号
US19330659087
申请日期
1933.03.01
申请人
BELL TELEPHONE LABORATORIES INCORPORATED
发明人
HARDESTY JAMES M.
分类号
H02G9/06
主分类号
H02G9/06
代理机构
代理人
主权项
地址
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