-
公开(公告)号：US2154275A
公开(公告)日：1939-04-11
申请号：US10850036
申请日：1936-10-30
Applicant: SIEMENS AG
Inventor： ADOLF LINN
IPC: H01J13/20
CPC classification number: H01J13/20 , H01J2893/0092 , Y10T403/459 , Y10T403/59
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
