-
公开(公告)号：US2824231A
公开(公告)日：1958-02-18
申请号：US51307355
申请日：1955-06-03
Applicant: BELL TELEPHONE LABOR INC
Inventor： JOSEPH FEINSTEIN , TURRELL GEORGE C
IPC: H01J25/587
CPC classification number: H01J25/587
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
