-
公开(公告)号：US2968694A
公开(公告)日：1961-01-17
申请号：US66787157
申请日：1957-06-25
Applicant: BELL TELEPHONE LABOR INC
Inventor： SCHWENDER GEORGE E , VANDERLIPPE RICHARD A
IPC: H04L12/26
CPC classification number: H04L43/50
Search Results
1
records
(took 0.011 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
