-
-
公开(公告)号：US2108097A
公开(公告)日：1938-02-15
申请号：US74220034
申请日：1934-08-31
Applicant: RCA CORP
Inventor： BEDFORD ALDA V , KELL RAY D
IPC: H01J31/30
CPC classification number: H01J31/30
-
Search Results
32
records
(took 0.011 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
