-
公开(公告)号：US2975319A
公开(公告)日：1961-03-14
申请号：US71795458
申请日：1958-02-27
Applicant: TESLA NP
Inventor： ANTONIN HIX
IPC: H01J17/44
CPC classification number: H01J17/44 , H01J2893/0068
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
