-
公开(公告)号：US3324314A
公开(公告)日：1967-06-06
申请号：US43540565
申请日：1965-02-16
Applicant: HAIM COHEN
Inventor： HAIM COHEN
IPC: H01J45/00
CPC classification number: H01J45/00
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
