-
公开(公告)号：US2278093A
公开(公告)日：1942-03-31
申请号：US30372039
申请日：1939-11-10
Applicant: RCA CORP
Inventor： PETERSON HAROLD O , WINANS PAUL V
IPC: H03H9/09
CPC classification number: H03H9/09
Search Results
1
records
(took 0.012 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
