-
公开(公告)号：SU63465A3
公开(公告)日：1943-11-30
申请号：SU308279
申请日：1939-02-01
Applicant: GL UPRAVLENIE ELEKTROSLABOTOCHNOJ PROMY
Inventor： R SHARDLOV
IPC: H01J1/90
Search Results
1
records
(took 0.022 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
