-
公开(公告)号：US2045663A
公开(公告)日：1936-06-30
申请号：US3176835
申请日：1935-07-17
Applicant: PHILIPS NV
Inventor： EDMUND LOPP
CPC classification number: H01J29/82 , H01J19/42 , H01J2893/0002
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
