-
公开(公告)号：US2978534A
公开(公告)日：1961-04-04
申请号：US76051158
申请日：1958-09-11
Applicant: BELL TELEPHONE LABOR INC
Inventor： CROWSON FRED B , LOCKE GEORGE A , MACLAUGHLIN RALPH R
IPC: H04L12/54
CPC classification number: H04L12/54
Search Results
1
records
(took 0.013 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
