-
公开(公告)号：US2195301A
公开(公告)日：1940-03-26
申请号：US27435439
申请日：1939-05-18
Applicant: BAIRD TELEVISION LTD
Inventor： HARRY GRAYSON
CPC classification number: H04B1/1009 , H03H2/008
Search Results
1
records
(took 0.02 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
