-
公开(公告)号：US2059902A
公开(公告)日：1936-11-03
申请号：US3700935
申请日：1935-08-20
Applicant: GEN ELECTRIC
Inventor： WILHELM PERSCH
CPC classification number: H01J5/32 , H01J19/42 , H01J2893/0002
Search Results
1
records
(took 0.007 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
