-
公开(公告)号：US2468154A
公开(公告)日：1949-04-26
申请号：US50499843
申请日：1943-10-05
Applicant: BELL TELEPHONE LABOR INC
Inventor： ASHWORTH JOSEPH A , CHEGWIDDEN RAYMOND A
IPC: G01R33/12
CPC classification number: G01R33/1223
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
