-
公开(公告)号：US2267344A
公开(公告)日：1941-12-23
申请号：US10695836
申请日：1936-10-22
Applicant: GEN ELECTRIC
Inventor： SPANNER HANS J , OSKAR GADAMER
IPC: H01J61/067
CPC classification number: H01J61/067
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
