-
公开(公告)号：US2174382A
公开(公告)日：1939-09-26
申请号：US24056938
申请日：1938-11-15
Applicant: GEN ELECTRIC
Inventor： ELDER THOMAS A , GABLE ALBERT C
IPC: H01J5/42
CPC classification number: H01J5/42 , H01J2893/0034 , Y10T403/217 , Y10T403/479
Search Results
1
records
(took 0.008 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
