-
公开(公告)号：US2799790A
公开(公告)日：1957-07-16
申请号：US28835152
申请日：1952-05-16
Applicant: INT STANDARD ELECTRIC CORP
Inventor： ALBERT LIEB
IPC: H01J31/14
CPC classification number: H01J31/14
Search Results
11
records
(took 0.013 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
