-
1.发明授权Line circuit for a key telephone system utilizing a single multifunction supervisory relay 失效用于使用单个多功能监控继电器的关键电话系统的线路电路
公开(公告)号：US3436488A
公开(公告)日：1969-04-01
申请号：US3436488D
申请日：1966-03-17
Applicant: BELL TELEPHONE LABOR INC
Inventor： BARBATO ROBERT E , DAVIS DAVID T
CPC classification number: H04M9/006
-
公开(公告)号：US3385935A
公开(公告)日：1968-05-28
申请号：US40462164
申请日：1964-10-19
Applicant: BELL TELEPHONE LABOR INC
Inventor： ANDERSON HAROLD P , DAVIS DAVID T , HOHMANN JR LAWRENCE A , MAUL LLOYD L , MCEOWEN JAMES R , MEISE JR HENRY A , WELL GEORGE W
-
Search Results
2
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
